Breecher,
I suspect you aren't bother by facts but here's a few anyway.
No pay per click - it's flat rate advertising across the whole site. A page view is a page view whether registered or not, whether logged in or not and gets counted by a third party- presently it's google analytics.
Once you've got 20,000 pilots signed up here that's all that matters and it happened 7 years ago. You'll note we're not carrying advertising outside of pro aviation. You'll also note that we don't do pop ups, mail shots or audio ads.
Registering evens out demand and especially helps all our sneaky anti spam and scamster spybots and scripts. It really does keep out the riff raff that spoil other sites.
You've got a mouse - if it really annoys you make us suffer and go elswhere. If you can persuade 15,000 other people to do that every day we won't have to have you registered to view the site. And if you can persuade 35,000 to join you per day we won't need ads.
Now there's a project to get your teeth into
Rob