I'm sorry Facebook but your ad targeting systems are wildly inaccurate and reduce that valuable screen estate to the right hand side of my browser window to irrelevant line noise. Google's and Yahoo's ad targeting is pretty darn good but looking at Facebook right now offers me:

• Omniture Research; which Obama used, apparently.
• Free laptop from Vodafone Business; I'm not self employed so a business tariff is a non starter.
• Everyone plays Mafia Wars; except me and most of my friends.