diff --git a/create_post.js b/create_post.js
index 3c5246a..0c5d900 100644
--- a/create_post.js
+++ b/create_post.js
@@ -44,8 +44,68 @@ const fs = require('node:fs/promises');
         }
     }
 
+    let parsedPostContent = "";
+    let tags = [];
+
+    let chars = Array.from(postContent);
+    for ( let i = 0; i < chars.length; i++ ) {
+        if ( chars[i] !== "@" )
+            parsedPostContent = `${parsedPostContent}${chars[i]}`;
+        if ( chars[i] === "@" ) {
+            let potentialMentionUsername = "";
+            let fulfilledPotentialMention = false;
+            let fulfilledReallyLikelyPotentialMention = false;
+            let potentialMentionDomain = "";
+            let lameDuckSpacing = "";
+            i++;
+            while ( i < chars.length && fulfilledPotentialMention === false ) {
+                if ( chars[i] !== "@" ) {
+                    potentialMentionUsername = `${potentialMentionUsername}${chars[i]}`;
+                }
+                if ( chars[i] === "@" ) {
+                    fulfilledPotentialMention = true;
+                    i++
+                    while ( i < chars.length && fulfilledReallyLikelyPotentialMention === false ) {
+                        potentialMentionDomain = `${potentialMentionDomain}${chars[i]}`;
+                        if ( chars[i].match(/\s/) ) {
+                            fulfilledReallyLikelyPotentialMention = true;
+                            lameDuckSpacing = chars[i];
+                        } else {
+                            i++;
+                        }
+                    }
+                }
+                if ( chars[i].match(/\s/) ) {
+                    fulfilledPotentialMention = true;
+                }
+                i++;
+            }
+            if ( fulfilledPotentialMention ) {
+                if ( fulfilledReallyLikelyPotentialMention || i === chars.length ) {
+                    const allowTag = await confirm({message: `Tag @${potentialMentionUsername}@${potentialMentionDomain}`, default: true});
+                    if ( allowTag ) {
+                        // TODO: Parse this at post creation time, rather than rely on dynamic content.
+                        //       In order to accomplish this, we'll need to be able to create a stub user and signed HTTP requests.
+                        parsedPostContent = `${parsedPostContent}[@${potentialMentionUsername}](https://${domain}/resolveUser?user=${potentialMentionUsername}&domain=${potentialMentionDomain})`;
+                        // TODO: Finger the user at post creation time, rather than rely on dynamic content.
+                        tags.push(`https://${domain}/resolveWebfinger?user=${potentialMentionUsername}&domain=${potentialMentionDomain}`);
+                    } else {
+                        parsedPostContent = `${parsedPostContent}@${potentialMentionUsername}@${potentialMentionDomain}`;
+                    }
+                    if ( fulfilledReallyLikelyPotentialMention ) {
+                        parsedPostContent = `${parsedPostContent}${lameDuckSpacing}`;
+                    }
+                } else {
+                    parsedPostContent = `${parsedPostContent}@${potentialMentionUsername}`;
+                }
+            } else {
+                parsedPostContent = `${parsedPostContent}@${potentialMentionUsername}`;
+            }
+        }
+    }
+
     // TODO: Support attachments.
-    let postContentHtml = (new commonmark.HtmlRenderer()).render(new commonmark.Parser().parse(postContent)).replace(/\n$/, "");
+    let postContentHtml = (new commonmark.HtmlRenderer()).render(new commonmark.Parser().parse(parsedPostContent)).replace(/\n$/, "");
     let timestamp = Date.now();
     let postId = `${timestamp}`;
 
@@ -71,7 +131,8 @@ const fs = require('node:fs/promises');
             "https://www.w3.org/ns/activitystreams#Public"
         ],
         "cc": [
-            `https://${domain}/users/${user}/followers`
+            `https://${domain}/users/${user}/followers`,
+            ...tags
         ],
         "sensitive": false,
         "content": postContentHtml,