An adword ad stuck on my site

i have a high traffic white hat site with adsense which recently has a particular ad sticking on top of my 160x600 text tower. I bet it gets quite a few clicks. The ad is relevant to my content but my adsense per click income fluctuates a bit in past couple of weeks.

Is there any way/tool to find out if that ad pays good?

I don't know if there is a tool to find out the amount which advertiser spends per click.

If they are using the search network, you can google the keyword and locate their ad position. If they are on top position in google search they must be paying good. If they are in the bottom, then use the competitor filter inside your adsense account to get rid off them.

@neo, that makes sense : )

I was asking because our good friend Market Samurai is able to sort out how much each keyphrase is paying. But that was just on to per keyphrase level, not per advertiser. May be it is just using your kind of approach to sort out.

shouldnt this post be in adsense thread ?