Share 'Project Wonderful invitation'

Over the past couple of weeks I've seen more and more references to Project Wonderful. I checked it out this week and was pleasantly surprised by how it works. After a little clicking and fiddling around, I've got PW ads posted on three of my blogs, and have even had a tiny little bidding war over one ad spot. Ok, $.02 per day beat out $.01 per day, but it's more than the big $0 I had with AdWord…