What exactly is 2o7.net?

rottenSoul writes: I generally only allow specific cookies in my browser. Recently, I've seen a lot of 2o7.net cookies from 3rd party sites on mainstream sites. It's a web analytics company. Is this doubleclick2 or a harmless cookie? The cookie if different for each site but the root is the same. Here's what I found at 2o7.net: http://www.omniture.com/privacy/2o7?f=2o7#optout