That's true as well, but those sorts of sites (and the odd exchange as well) seem to be the only websites that can afford to spend thousands of dollars advertising on their website or service. If the forum wanted to show ads from interesting bitcoin startups with a lack of cash, they could consider opening a few more ad slots for auction, as that would drive down the price per slot, making it more affordable for startups. However, that's a completely different topic from this, so I'll just stop it there to prevent this thread from getting derailed.