I wasn't looking at clicks as an all-out alternative. Having some idea of the math behind them helps to make suggestions as to how to help. I.e, 1 click = $X, therefor "Y" clicks per member, per month equals $?.
I click on the ads quite a bit, but hadn't thought to let them stay open. I also suspect Google Lead Services can see that the bulk of my clicks come from one of two primary IP addresses.
On a similar note, rather than a one-time mention here to thank members for their donations, how about adding statuses (similar to 'feature writer') such as Gold, Silver or Bronze Supporter?
One last thing. If the members are amenable, perhaps we could sell via Amazon or other mechanisms, collections of photos from our images section? Those photogs who do their own shooting (Grob, Allemano, etc.,) could achieve Gold status, for instance, by allowing the inclusion of their work in such publications.
Just thinking out, in text.