Re: The thing is... it's nothing new.
I can only think of one that I know of and that's FetchEveryone, a small-ish UK-centric website/social forum focussed on running, with a bit of cycling and triathlon thrown in. Free of charge to anyone who registers with adverts on the page (well behaved and monitored adverts, but there anyway). You can take a subscription for a monthly sum that allows you to request all the adverts be turned off to you.
Biting the hand that feeds IT
