[DealerDan]

Basically just covering what has already been mentioned, but you'll be very lucky to get any good players(initially) from people that are looking for no deposit bonuses. Your demographics are either going to be super-cheap bonus whores, or new players. Neither of these two will usually make you any money, as the new players will lose it very fast, and the super-cheap bonus whores most probably will too, or work it up just enough to make a withdrawal and they'll move on. If you get lucky, you'll get a new player who while loses the money, gets hooked and keeps depositing, and if the poker room is a good one, via their marketing will stick around and play. But for every 1 of those players you'll get, 999 others will be useless.

As Giorgio said though - you can try to educate these players. If I was doing it I wouldn't be just saying "Hey heres some free cash", I'd be using the free cash as an addition to a site or guide. Like a step by step guide to get people to be better poker players, and once you've taught them the basics, introduce the free money sites. This is long-term though.