diff --git a/forum-network/src/classes/dao/forum.js b/forum-network/src/classes/dao/forum.js
index cec6fdb..5d2a758 100644
--- a/forum-network/src/classes/dao/forum.js
+++ b/forum-network/src/classes/dao/forum.js
@@ -69,6 +69,34 @@ class Post extends Actor {
   }
 }
 
+class Author {
+  constructor(forum, publicKey) {
+    this.forum = forum;
+    this.publicKey = publicKey;
+    this.name = publicKey;
+  }
+
+  getReputation() {
+    const authorVertex = this.forum.graph.getVertex(this.publicKey);
+    if (!authorVertex) {
+      return 0;
+    }
+    const authorEdges = authorVertex.getEdges(EdgeTypes.AUTHOR, false);
+    const tokenValues = authorEdges.map(({ data: { tokenId } }) => this.forum.dao.reputation.valueOf(tokenId));
+    console.log('getReputation', { authorEdges, tokenValues });
+    return tokenValues.reduce((value, total) => total += value, 0);
+  }
+
+  getLabel() {
+    return `${this.name}
+    <table><tr>
+      <td>reputation</td>
+      <td>${displayNumber(this.getReputation())}</td>
+    </tr></table>`
+      .replaceAll(/\n\s*/g, '');
+  }
+}
+
 /**
  * Purpose:
  * - Forum: Maintain a directed, acyclic, graph of positively and negatively weighted citations.
@@ -129,8 +157,9 @@ export class Forum extends ReputationHolder {
     this.graph.setVertexDisplayLabel(post.id, post.getLabel());
 
     const addAuthorToGraph = (publicKey, weight, authorTokenId) => {
+      const author = new Author(this, publicKey);
       const authorVertex = this.graph.getVertex(publicKey)
-        ?? this.graph.addVertex(VertexTypes.AUTHOR, publicKey, { name: publicKey, publicKey }, publicKey);
+        ?? this.graph.addVertex(VertexTypes.AUTHOR, publicKey, author, author.getLabel());
       const authorEdge = this.graph.addEdge(
         EdgeTypes.AUTHOR,
         postVertex,
@@ -184,9 +213,10 @@ export class Forum extends ReputationHolder {
     // Transfer ownership of the minted tokens to the authors
     for (const authorEdge of postVertex.getEdges(EdgeTypes.AUTHOR, true)) {
       const authorVertex = authorEdge.to;
-      const { publicKey } = authorVertex.data;
+      const author = authorVertex.data;
       const { tokenId: authorTokenId } = authorEdge.data;
-      this.dao.reputation.transfer(this.id, publicKey, authorTokenId);
+      this.dao.reputation.transfer(this.id, author.publicKey, authorTokenId);
+      authorVertex.setDisplayLabel(author.getLabel());
     }
   }
 
diff --git a/forum-network/src/classes/reputation/reputation-token.js b/forum-network/src/classes/reputation/reputation-token.js
index a48b00e..65847d6 100644
--- a/forum-network/src/classes/reputation/reputation-token.js
+++ b/forum-network/src/classes/reputation/reputation-token.js
@@ -79,7 +79,11 @@ export class ReputationTokenContract extends ERC721 {
   }
 
   valueOf(tokenId) {
-    return this.values.get(tokenId);
+    const value = this.values.get(tokenId);
+    if (value === undefined) {
+      throw new Error(`Token not found: ${tokenId}`);
+    }
+    return value;
   }
 
   availableValueOf(tokenId) {
diff --git a/forum-network/src/classes/supporting/wdag.js b/forum-network/src/classes/supporting/wdag.js
index 1b96124..ac35558 100644
--- a/forum-network/src/classes/supporting/wdag.js
+++ b/forum-network/src/classes/supporting/wdag.js
@@ -15,6 +15,10 @@ export class Vertex {
       (edge) => edge.type === type,
     );
   }
+
+  setDisplayLabel(label) {
+    this.graph.setVertexDisplayLabel(this.id, label);
+  }
 }
 
 export class Edge {