I never knew this - Facebook uses Adbrite
 

I was looking around for a mainstream ad and I found Facebook selling ads on Adbrite... I thought they had their own in house ads ..thats what I used anyway ...You live and learn

Very interesting that they are still advertising. Good for them for expanding even though they are huge

OK this is getting wierd they also have Hotmail on there. Why would hotmail want to use adbrite that dont make sense at all