I'm sure you've noticed by now that Proboard places Ads by Google on this site. They use their technology to see what phrases are being used on the forum and place the ads accordingly.
I'm not thrilled about this. I've clicked on a few of the ads, and some of them aren't exactly what I'd like to recommend to my friends: MT schools with no known track record, offshore MT services, etc.
I have no control over the ads and receive none of the revenue. The only ad I am responsible for is the text ad that appears under Job Opportunities.