Well, the good thing about google's ad program is it's not annoying like most. Nor is it in the way very much. However, I'd caution about getting to ad happy. The coolest thing about WiGLE is that it's above and beyond all of the more commercial sites, both in the community, the site design, and everything. I'm sure this is not your intentions, but in a few years, you WiGLE guys might refer to this message.... Don't take something good like it is now, and ruin it with more ads than content.
Anyway, don't get me wrong, I see that it is entirely necessary, and it's non-invasive. Just don't turn WiGLE into another netstumbler.com.
Wow, that post did not come out right at all. Anyway, it's not what I said it's what I meant. I am supportive of WiGLE's form of funding. I think it's necessary to keep such an awesome project going.