There's a list of popular feeds at http://www.livejournal.com/syn/ and if you know a feed URL you can find it by using the search on that page. There's a list of all updating syn feeds at http://www.livejournal.com/syn/list.bml (and boy are there a lot of them!), and I'll just make quick mention of a few I've created that people on my friends list might be interested in: peteashton, bugpowder_rss, twic (hardly ever posts), pickypicky (comments from the picky picky game), and pdc (Damians blog on alleged). Share and enjoy!
I am going to write about my Easter weekend, but not until I get back from lunch.