I recently added adsense ads to my blog. There is this one weird ad that says "Searches related to:" then "my site". You will probably be able to see it if you go to my blog in my signature. Is this a good ad? It really looks out of place in my blog. I've also seen it on another site so yea. Should I block it or will it make me money?
You need to split test in order to find out whether is making you money. Using google adsense custom channel and track your ads. See the progress of the ads.