diff --git a/public/market.html b/public/market.html
index 554b5fd..e3b7346 100644
--- a/public/market.html
+++ b/public/market.html
@@ -13,6 +13,10 @@
             <p class="eyebrow">Community</p>
             <h1>Persona Market</h1>
             <p class="subtitle">Browse shared personas and choose who should embody them.</p>
+            <div class="market-search">
+                <label for="marketSearch">Search personas</label>
+                <input id="marketSearch" type="search" placeholder="Search by name, creator, or details"/>
+            </div>
         </div>
         <div class="market-header-actions">
             <button id="refreshMarket" class="secondary-action" type="button">Refresh listings</button>
diff --git a/public/market.js b/public/market.js
index e853fbb..584a505 100644
--- a/public/market.js
+++ b/public/market.js
@@ -2,6 +2,8 @@ const marketPersonaList = document.getElementById("marketPersonaList");
 const marketUserPersonaList = document.getElementById("marketUserPersonaList");
 const refreshMarketBtn = document.getElementById("refreshMarket");
 const marketStatus = document.getElementById("marketStatus");
+const marketSearchInput = document.getElementById("marketSearch");
+let allMarketPersonas = [];
 
 async function request(url, data, method = "POST") {
     try {
@@ -37,7 +39,9 @@ function setMarketStatus(message, state = "") {
 
 function buildPersonaMeta(persona) {
     const pronouns = persona.pronouns ? `Pronouns: ${persona.pronouns}` : "Pronouns: —";
-    return `By ${persona.creator_username} • ${pronouns}`;
+    const usageCount = Number(persona.usage_count || 0);
+    const usageLabel = `Used ${usageCount} ${usageCount === 1 ? "time" : "times"}`;
+    return `By ${persona.creator_username} • ${pronouns} • ${usageLabel}`;
 }
 
 function renderMarketList(personaItems, listElement, personaType) {
@@ -88,6 +92,35 @@ function renderMarketList(personaItems, listElement, personaType) {
     });
 }
 
+function filterMarketPersonas() {
+    const query = marketSearchInput?.value.trim().toLowerCase() || "";
+    if (!query) return allMarketPersonas;
+    return allMarketPersonas.filter(persona => {
+        const fields = [
+            persona.name,
+            persona.creator_username,
+            persona.pronouns,
+            persona.appearance,
+            persona.background,
+            persona.details
+        ];
+        return fields.some(field => field && field.toLowerCase().includes(query));
+    });
+}
+
+function applyMarketFilter() {
+    const filtered = filterMarketPersonas();
+    const assistantMarket = filtered.filter(persona => persona.persona_type === "assistant");
+    const userMarket = filtered.filter(persona => persona.persona_type === "user");
+    renderMarketList(assistantMarket, marketPersonaList, "assistant");
+    renderMarketList(userMarket, marketUserPersonaList, "user");
+    if (marketSearchInput?.value.trim() && !filtered.length) {
+        setMarketStatus("No personas match your search.", "error");
+        return;
+    }
+    setMarketStatus("Choose an AI persona or a user persona to equip.");
+}
+
 async function loadMarketPersonas() {
     setMarketStatus("Loading market personas...");
     const res = await get("/personas/market");
@@ -95,12 +128,8 @@ async function loadMarketPersonas() {
         setMarketStatus(res.error, "error");
         return;
     }
-    const marketPersonas = res.personas || [];
-    const assistantMarket = marketPersonas.filter(persona => persona.persona_type === "assistant");
-    const userMarket = marketPersonas.filter(persona => persona.persona_type === "user");
-    renderMarketList(assistantMarket, marketPersonaList, "assistant");
-    renderMarketList(userMarket, marketUserPersonaList, "user");
-    setMarketStatus("Choose an AI persona or a user persona to equip.");
+    allMarketPersonas = res.personas || [];
+    applyMarketFilter();
 }
 
 async function collectMarketPersona(marketId, personaType) {
@@ -114,6 +143,7 @@ async function collectMarketPersona(marketId, personaType) {
         setMarketStatus(res.error, "error");
         return;
     }
+    await loadMarketPersonas();
     setMarketStatus(
         personaType === "assistant"
             ? "AI persona equipped. Head back to chat to use it."
@@ -126,6 +156,10 @@ if (refreshMarketBtn) {
     refreshMarketBtn.addEventListener("click", () => loadMarketPersonas());
 }
 
+if (marketSearchInput) {
+    marketSearchInput.addEventListener("input", () => applyMarketFilter());
+}
+
 window.addEventListener("load", () => {
     loadMarketPersonas();
 });
diff --git a/public/style.css b/public/style.css
index a94e23f..a8c243f 100644
--- a/public/style.css
+++ b/public/style.css
@@ -928,6 +928,33 @@ a.secondary-action {
     margin: 4px 0;
 }
 
+.market-search {
+    display: grid;
+    gap: 6px;
+    margin-top: 12px;
+    max-width: 320px;
+}
+
+.market-search label {
+    font-size: 0.78rem;
+    color: var(--text-muted);
+}
+
+.market-search input {
+    padding: 10px 12px;
+    border-radius: 10px;
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    background: rgba(10, 10, 25, 0.8);
+    color: var(--text-primary);
+    font-size: 0.9rem;
+}
+
+.market-search input:focus {
+    outline: none;
+    border-color: var(--accent);
+    box-shadow: 0 0 0 2px rgba(112, 86, 255, 0.25);
+}
+
 .market-header-actions {
     display: flex;
     gap: 10px;
diff --git a/server.js b/server.js
index 3325e08..7dc54b1 100644
--- a/server.js
+++ b/server.js
@@ -203,6 +203,10 @@ db.prepare(`
             TEXT
             DEFAULT
                 'assistant',
+        source_market_id
+            INTEGER,
+        source_creator_username
+            TEXT,
         created_at
             DATETIME
             DEFAULT
@@ -272,6 +276,10 @@ db.prepare(`
             TEXT
             DEFAULT
                 'assistant',
+        usage_count
+            INTEGER
+            DEFAULT
+                0,
         created_at
             DATETIME
             DEFAULT
@@ -362,6 +370,8 @@ const listPersonasByTypeStmt = db.prepare(`
            background,
            details,
            persona_type,
+           source_market_id,
+           source_creator_username,
            created_at,
            updated_at
     FROM personas
@@ -377,10 +387,36 @@ const getPersonaStmt = db.prepare(`
       AND username = ?
 `);
 
+const getPersonaForPublishStmt = db.prepare(`
+    SELECT id,
+           name,
+           pronouns,
+           appearance,
+           background,
+           details,
+           persona_type,
+           source_market_id,
+           source_creator_username
+    FROM personas
+    WHERE id = ?
+      AND username = ?
+`);
+
 const insertPersonaStmt = db.prepare(
     "INSERT INTO personas (username, name, pronouns, appearance, background, details, persona_type) VALUES (?, ?, ?, ?, ?, ?, ?)"
 );
 
+const insertMarketPersonaStmt = db.prepare(
+    "INSERT INTO personas (username, name, pronouns, appearance, background, details, persona_type, source_market_id, source_creator_username) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)"
+);
+
+const getPersonaBySourceMarketStmt = db.prepare(`
+    SELECT id
+    FROM personas
+    WHERE username = ?
+      AND source_market_id = ?
+`);
+
 const updatePersonaStmt = db.prepare(`
     UPDATE personas
     SET name       = ?,
@@ -437,6 +473,7 @@ const listMarketPersonasStmt = db.prepare(`
            background,
            details,
            persona_type,
+           usage_count,
            created_at,
            updated_at
     FROM persona_market
@@ -452,7 +489,8 @@ const getMarketPersonaStmt = db.prepare(`
            appearance,
            background,
            details,
-           persona_type
+           persona_type,
+           usage_count
     FROM persona_market
     WHERE id = ?
 `);
@@ -491,6 +529,12 @@ const listPublishedPersonaIdsStmt = db.prepare(`
     WHERE creator_username = ?
 `);
 
+const incrementMarketUsageCountStmt = db.prepare(`
+    UPDATE persona_market
+    SET usage_count = usage_count + 1
+    WHERE id = ?
+`);
+
 const migrationNeeded = db.prepare(
     "SELECT COUNT(*) as count FROM chat_messages"
 ).get();
@@ -519,6 +563,14 @@ const hasPersonaType = personaColumns.some(column => column.name === "persona_ty
 if (!hasPersonaType) {
     db.prepare("ALTER TABLE personas ADD COLUMN persona_type TEXT DEFAULT 'assistant'").run();
 }
+const hasSourceMarketId = personaColumns.some(column => column.name === "source_market_id");
+if (!hasSourceMarketId) {
+    db.prepare("ALTER TABLE personas ADD COLUMN source_market_id INTEGER").run();
+}
+const hasSourceCreatorUsername = personaColumns.some(column => column.name === "source_creator_username");
+if (!hasSourceCreatorUsername) {
+    db.prepare("ALTER TABLE personas ADD COLUMN source_creator_username TEXT").run();
+}
 
 const userSettingsColumns = db.prepare("PRAGMA table_info(user_settings)").all();
 const hasActiveUserPersona = userSettingsColumns.some(column => column.name === "active_user_persona_id");
@@ -531,6 +583,11 @@ const hasPersonaIdColumn = marketColumns.some(column => column.name === "persona
 if (!hasPersonaIdColumn) {
     db.prepare("ALTER TABLE persona_market ADD COLUMN persona_id INTEGER").run();
 }
+const hasUsageCount = marketColumns.some(column => column.name === "usage_count");
+if (!hasUsageCount) {
+    db.prepare("ALTER TABLE persona_market ADD COLUMN usage_count INTEGER DEFAULT 0").run();
+}
+db.prepare("UPDATE persona_market SET usage_count = 0 WHERE usage_count IS NULL").run();
 
 const FileStore = FileStoreFactory(session);
 app.use(bodyParser.json());
@@ -823,10 +880,13 @@ app.get("/personas/market", requireLogin, (req, res) => {
 app.post("/personas/:id/publish", requireLogin, (req, res) => {
     const user = req.session.user;
     const personaId = Number(req.params.id);
-    const persona = getPersonaStmt.get(personaId, user);
+    const persona = getPersonaForPublishStmt.get(personaId, user);
     if (!persona) {
         return res.status(404).json({error: "Persona not found"});
     }
+    if (persona.source_market_id) {
+        return res.status(403).json({error: "Collected personas cannot be published."});
+    }
     upsertMarketPersonaStmt.run(
         personaId,
         user,
@@ -848,15 +908,25 @@ app.post("/personas/market/:id/collect", requireLogin, (req, res) => {
     if (!marketPersona) {
         return res.status(404).json({error: "Market persona not found"});
     }
-    const personaId = insertPersonaStmt.run(
+    if (marketPersona.creator_username === user) {
+        return res.status(400).json({error: "You already own this persona."});
+    }
+    const existingPersona = getPersonaBySourceMarketStmt.get(user, marketId);
+    if (existingPersona) {
+        return res.status(400).json({error: "You already collected this persona."});
+    }
+    const personaId = insertMarketPersonaStmt.run(
         user,
         marketPersona.name,
         marketPersona.pronouns,
         marketPersona.appearance,
         marketPersona.background,
         marketPersona.details,
-        marketPersona.persona_type
+        marketPersona.persona_type,
+        marketId,
+        marketPersona.creator_username
     ).lastInsertRowid;
+    incrementMarketUsageCountStmt.run(marketId);
     let activePersonaId = null;
     let activeUserPersonaId = null;
     if (req.body?.equip) {