Google has created a way to fight comment spam. It involves adding rel="nofollow" to all of the links in comments, trackbacks, readership reports, etc. I've updated the Powerblogs software to make use of this tag to help fight trackback spam.
Top Feature Requests
- Spell Checking
- A Calendar index to daily archive pages
- An RSS Aggregator from the BlogRoll
- Ping weblogs.com and blo.gs on posts