Ad Exchange (Google, OpenX, RMX)

Hi dear All,
Let’s discuss ad exchanges.
What to share my experience. Yet it was only with Right Media Exchange: their ads sucks: jumping, blinking and so on. Though if ad network uses their yieldmanager solution it doesn’t always mean the ads are from exchange.
I think Google’s ad exchange is the best.
OpenX Market – do you know?
My main question now (don’t laugh) who ‘pays’ supplier for being in the his market: is % added to advertiser’s expenditure or deducted from publisher’s revenue?
Thanks!
M.

See original post by Maria Stone