I see there are a couple of mods out there that help deal with comment spam but I was wondering if there was an actual live service online that would enable people to expand their own personal bans to everybody else that uses WP. I was thinking about this as my personal site is being plagued by a bot and wondering just how many thousands of other people might have been affected on the net at large.
Basically it would work like this. A central database sits somewhere and stores IP address, URL and email information as well as comment content that can be used to determine if a comment is spam or not.
As users using WordPress block IP addresses it could sent this information to the central server which would store it.
New comments posted would be checked against the WP filter first, if it passes that test then WP would ping the database (we could use an XML to send info back and forward just like the pings) to see if its reported as spam there. WordPress would recieve either a green light back that would allow the comment to be posted or stick it in the moderation queue (for the really anal) or would send a red light back which would add the post info to the perminent local filter and either delete the comment and stick it in the moderate queue (for the unsure).
Complex but I'm up for the challenge, I reckon it would take about a week to code max. I just need to know if folk think its worth doing, and am trying to make sure it does not exist already.