pretty sure that's not an ad it's a thing hangout does for all its boards. I think they use cookies tooo to see which board you visit most and show that first. I visit fitx a lot and that Cinergy link pops upfirst for me.

Plus it only links to the board not to the site when you click it.

Just cam to look at righ and am trying to do research, but I'm pretty sure those ar not "ads" on the ihangout front page.