[haynesey]

I would wait until you establish a little more before you start selling advertising space.

Also personally i wouldn't sell space, keep adding more content about your chosen niche then add some banners for a couple of poker sites, don't over do it. Or even host a few small $100 freerolls for all players from the London area, I'm sure you will do well if you concentrate on content and becoming an authority site for your city.