AdSense can be so lame.
I Google "cluster" and what do I get in the ads? "Find the lowest prices on cluster". I won't name the company, but you can find them.
Google is ramping up its assault on the mobile internet with tests of its AdSense service and rumours of product search aimed at the mobile phone screen. AdSense allows websites to allocate space to Google, which then provides context-sensitive advertisements and splits the revenue those ads generate with the site owner. …