mediapartners-google crawls images?

trying to understand how the bot is working

[netmeg]

I have a client who has adsense on the front page of his site - it's a dynamic site, and there's several thousand images. Lately we've noticed the mediapartners-google bot crawling the images as well as the pages - 9900 times in the past 24 hours. What would be the purpose of that?

[bumpski]

They've probably started to look for images with the words "Click here" or "Click the Ads", etc. It's not that hard to extract text from images, especially if you've got the money to do it.

If they find those words then by by!

[netmeg]

Yea but.. they are not only indexing the thumbnails, they are following the links on the thumbnails to the full sized pictures. It all looks very weird, considering that the mediapartners-google bot (I thought) was just for AdSense.