That's 4 websites I don't have to check anymore... I can just add them to my friends list.
1) This is a paid user tool.
2) I only did the back-end. avva will be working on the UI to let you create new LJ RSS accounts from RSS URLs. Right now, the 4 examples above I did by hand in the database.
I'm sure there's room for improvement, but it's pretty good so far.
Reply here with some popular sites' RSS feeds and I'll create accounts for them manually for people to enjoy before Avva's done with the front-end.
Update: I'm working with the DeadJournal guy, getting them running the latest code. Once that happens, you'll be able to add DeadJournal friends to your LiveJournal friends list through this mechanism (since LJ exports RSS also) ... kinda hacky, but it'll work.