Import posts and comments from LiveJournal.
The other reviewers are correct; comments are doubled (x6 for me) for every post and I only have 117 of them, not hundreds like the others. It's a pain in the butt, but at least all of my entries are in one spot.
If you don't care about that sort of thing, this is for you. If you're more organized and don't want 30+ comments on one post when there's technically only 7, try to find another solution.