diff --git a/tildes/tildes/models/topic/topic.py b/tildes/tildes/models/topic/topic.py
index f92893d..b673c33 100644
--- a/tildes/tildes/models/topic/topic.py
+++ b/tildes/tildes/models/topic/topic.py
@@ -361,6 +361,26 @@ class Topic(DatabaseModel):
         # parsing it from the link if it's not present
         return self.get_content_metadata("domain") or get_domain_from_url(self.link)
 
+    @property
+    def link_source(self) -> str:
+        """Return the link's "source", which can be defined for certain domains.
+
+        If special behavior isn't defined for a domain, this just falls back to
+        returning the domain itself.
+        """
+        if not self.is_link_type:
+            raise ValueError("Non-link topics do not have a link source")
+
+        domain = self.link_domain
+        authors = self.get_content_metadata("authors")
+
+        if domain == "twitter.com" and authors:
+            return f"Twitter: @{authors[0]}"
+        elif domain == "youtube.com" and authors:
+            return f"YouTube: {authors[0]}"
+
+        return domain
+
     @property
     def is_spoiler(self) -> bool:
         """Return whether the topic is marked as a spoiler."""
diff --git a/tildes/tildes/templates/macros/topics.jinja2 b/tildes/tildes/templates/macros/topics.jinja2
index 392743d..4691c65 100644
--- a/tildes/tildes/templates/macros/topics.jinja2
+++ b/tildes/tildes/templates/macros/topics.jinja2
@@ -83,7 +83,7 @@
       {% if topic.is_user_treated_as_source %}
         aria-label="Posted by">{{ username_linked(topic.user.username) }}
       {% else %}
-        aria-label="Link domain">{{ topic.link_domain }}
+        aria-label="Link source">{{ topic.link_source }}
       {% endif %}
       </div>