I have two people friended on my LJ that post entries via an RSS feed...bgrice_blog and goraina's comic feed smile_comic. And for whatever reason, the feeds reset from time to time and repost every single entry over again, completely flooding out my Friends page. Brian's had it happen twice (once just a few day ago), and Raina's did it today for the third time.
It's not their fault, and I don't want to unfriend them, but...stupid RSS feeds. Get your act together and quit spamming me.