Blogger.com is a free service, and a small ad runs at the top of the screen. Though I am hugely ad-phobic, this one is fairly innocuous. It is small, the colors blend in, it doesn't pop up or move across the screen, and it only advertises google searches.
But apparently the content of those google searches are taken from keywords in the blog posts. Until I post something new, the ad is offering searches for national anthems! Isn't that ironic, given my feelings about those silly songs?