I'm working on raising capital to build the site, and for that reason I haven't specified how many Bitcoins I'll give away yet, but surely something that makes sense!
Consider this: once the website is up and running I'll have to spend some money with marketing anyway, so I figure it would be better to spend by giving some Bitcoins than anything else really. But since Coinners is still in a very early age I thought it would be nice to give the people of the forum the heads up and let them be the first to know when the give away actually happens.
Oh, and no, Coinners will not be a website to buy and sell coins, rather a marketplace for the exchange of products and services for virtual coins.