I do not know if MSN adcenter is accepting everyone now, but I was accepted a few days ago and I will be putting up, updates =D. Most will be unimpressive, since I get about 200 visitors a day =( trying to up that though!
Even your first update was informative. It tells us that they are not necessarily going after all the big guys first! I would have guessed that they would want sites with much more traffic than just 200 visits a day. There is hope for the little guy as an MS PubCenter publisher, and apparently in the short term. This will be good news for many. . .
Interesting. I was wondering if MSN could become a good competition to Adsense! Waiting for your updates.