[nicolewhite]

I like what OkCupid does. If you have an ad blocker enabled, they explain in the space where an ad would normally be that while OkCupid is free, it runs on ad revenue, with a link to their donation page.

[gk1]

That's the purpose of this script (as I see it): Detect if an ad blocker is being used, and if so, display some custom message.