diff --git a/FAQ.md b/FAQ.md
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@@ -36,6 +36,14 @@ Raspberry Pi that's plugged into power and internet. Once that's ready
 it will make an iOS app more feasible. But we are not sure if the 15 minute
 delay will be a deal-breaker.
 
+# What's the difference between a private group, a forum and a blog?
+
+A private group is a group chat where the admin decides who to invite. A forum is similar, but anyone can invite new members.
+
+A blog is a bit like a Telegram channel: you can write posts that all your contacts can see, and they can reshare individual posts or invite their contacts to subscribe to your feed.
+
+If you import an RSS feed it's converted into a Briar blog, so you can share individual posts or invite your contacts to subscribe to the feed.
+
 # When do posts in forums/groups/blogs get shared with others?
 
 A post will be shared with someone if all of these conditions are fullfilled: