Via Blogger Buzz, I learn that Blogger now has backlinks (a.k.a. trackback). Whenever you link to one of my posts, a reciprocal "backlink" will automatically appear below my post (just above the comments section), just as soon as Google's blogsearch picks up on it. It's very convenient. I don't know if mine is working yet though, so if anyone cares to test it... ;)
Update: It's working! See here for an example. I especially like how it also creates backlinks when I link to my own previous posts (which I tend to do a lot) -- it keeps my blog well interconnected without my having to manually update the old posts. I highly recommend this feature to other Blogger users out there! (You might find the help page on backlink tags to be useful when editing your template.)
Update 2: There's a bug which means if you view a backlinks-enabled blog in Firefox, you won't be able to select text (e.g. to copy and paste).
Update 3: You can fix this bug by disabling backlinks in your blog's "settings", but then installing this Browservulsel hack to provide backlinks instead.