Kos,
we need an IP tracking system in the site. When someone posts there should be the link to there username and if there IP is tracked on more than one username there should be a link to view that IP's complete history. The reason I say this is because there is someone out there formally named popcorn who is now deanforus who is going around under a new identity and as you can tell from his diary entry is pissing some poeple off. I'm not saying someone should get blocked for stating there opinion, however there post history should follow them just like it does all of the good users here at DailyKos.
I'd be willing to program this feature if you need someone.