Since the owner of this site charges nobody for anything, there does need to be some compensation for his time, computer and electricity (I believe he hosts on his own server). Google ads is probably the least noxious way of doing that and, unfortunately, you don't get to choose what shows up. The Google 'bots' will look for topics and post relevant ads. If for the next several weeks we discussed nothing but soup the bots might offer up different ads. Certainly when I see Google ads showing up on a site, whether it is here or elsewhere, I just ignore them.