I've been wanting to post this for a couple weeks (more a lurker than poster ). I think, as posted here http://forums.digitalpoint.com/showthread.php?t=39466 that since the adsense forum and google forum are pretty popular, it could be helpful to know which datacenter someone is referring to. Example someone is in the google subforum discussing what they're seeing. On nearly every one of these posts you need to ask what datacenter are you referring to? This could easily be solved by adding the datacenter ip in the postinfo. Could be done by user ip or by location I guess or an option in usercp. What do you think? Seems like a small suggestion but possibly helpful.
The majority of the time it won't be helpful - the only time it matters is when Google is doing a major update and when that happens many or most people DO post which datacenters are showing the result (see any one of the approximately two dozen Jagger threads).