Click for largerI've been seeing a lot of ads for Microsoft adcenter lately. After seeing this (on a celebrity gossip blog), I've concluded that I'm being shown so many of them because of behavioral targeting. Surely, they don't think that visitors of celebrity gossip blogs have a high composition of Internet advertisers. However, it's my opinion that some frequency capping might be in order. I already have an adcenter account, so the 50-100 impressions I've seen are wasted.