I hope not too many people have problems with the ads ... I'm indeed hoping that it will substantially increase revenue for Cantr. If not, I'll remove them again.
We don't get anything for the charity ads, only for the commercial ones. And for the latter only when you click on them

... What the amount is we get for clicking on them is variable, I think - Google uses some kind of complicated formula, I believe.
And yes, I added them, not phpBB

... I had this planned a long time ago, but just never got to it. I'm hoping that ads on the forum will be better context-wise than those on the front page.
Btw, they are not by definition only text - I've set it so that it also allows Google to put graphical ones there.