ServuStats are one of the many free website statistics trackers who offer free services in return for a small javascript-generated button (seen to the left) on your site. Like many other people, I used to use ServuStats to keep track of my site's statistics. But as of today someone in the organisation has had the bright idea of replacing the small button with a gigantic banner ad, without notifying anyone.
This is what the banner looks like:

Needless to say, I will removing the ServuStats code as soon as I have a free moment.
Update: I have now clicked through the banner ad, and discovered that it takes me to my ServuStats page, and then redirects me to engineseeker.com. This rake-it-in-now attitude makes me think that ServuStats have been hacked, rather it being a misguided marketing ploy. I have sent them an email, we'll see what they have to say for themselves.