So I have a site running, site is really targeted geographically and also by age. Traffic is good. My question is how do I get the advertisers to buy ad space from me? I am thinking of actually emailing them and telling them about my website, but my question is... What do they look in a site to convince them that paying X amount of money will benefit them? How do I prove to them that putting there ad on my site will be good for them?