With the recently released iTunes 8.0, it seems that my itunes tagger app's similar playlist functionality isn't a big priority anymore. While I sometimes like the results from last.fm's similar tracks better than itunes', having Genius built into itunes is just a lot more convenient.
The one thing iTunes is still (surprisingly) missing is automatic lyrics downloading. A while back I wrote a quick program to find some lyrics from lyricwiki and sing365, but it has since become terribly outdated and provided no relevant results. And since I still get a couple hits a day for that program, I thought I'd update it for y'all.
Unfortunately, during a hosting package transfer, things did not go as smoothly as I had anticipated. It now looks like everything is up and running, though there may be some odd bugs in the site here and there. Sorry for any inconvenience.