I spent $436.00 on bebo last week via google.
conversions 30 times worse then the average adsense site.
In terms of conversions, the traffic from bebo resulted in 30 times less signups then I would get from the average adsense site, and resulted in 1/20th the number of pageviews from users clicking through. I estimate 95%+ of the clicks coming from bebo where accidental, considering the click thru rate was 0.11% that isn’t unreasonable. There are many forums on the internet where people complain clicks from big social networks are useless as they are pretty much all accidental.
I think the myspace-google deal was really about toolbar distribution and fox’s other properties. Even yahoo has come out and said myspace clicks are worthless and has banned users from using YPN ads on their msypace profiles because they don’t convert at all, and yahoo didn’t want to make a deal with myspace.
If myspace inventory starts flooding adsense, publishers will switch to YPN by the hundreds of thousands. Categories earning $1.00 a click could easilly be reduced to 3 cents click when so much junk inventory gets tossed into the system.