Looks like Pownce has become very popular. The Pownce invites have started to appear on eBay. Kevin posted a note on Pownce about this. The prices start at $0.01 Bidding and go up to the Buy It Now price of $9.95. People are just crazy. It is a free service and there are lots of blogs out there which are giving out Pownce invites for free. I have 4 invites left to give away too.