Messenger contact list extended to 600 budies!

"We just have confirmed with Microsoft that the contact list capacity has doubled again, allowing you to add up to 600 buddies now. For many services, like Web2Messenger, this means they can now host more users on the same mirror address, quickly expanding their capacity!"Three-hundred contacts was already a lot, I wonder who can fill up their contact list to have 600 buddies the first! (Yes, thats a challenge)
News Source: http://www.messenger-blog.com/?p=159