I saw a neat bit of click arbitrage on Facebook earlier this week. I saw this ad for Stevie Wonder concert tickets (he's listed under my favourite music). Without thinking I clicked on the ad and was directed to… a page of Yahoo sponsored links.

I wonder how long it will take for Facebook to fill up with ads like this; it could easily alienate its users. It took Google a long time to introduce measures to stop arbitrage and low quality ads. How long will it take Facebook?