Thanks for your reply Lord
It does seem like a catch-22 situation doesn't it. I'm trying (or should I say planning) to not make the site just another hosting directory. What I really want to do is create partnerships with hosts whereby people who sign up to a host through my site get something extra. Two hosts so far have agreed to do this. One gives an extra month free and the other offers a lifetime discount.
I'm in the process of adding new features to the site (like a tell-a-friend form).
I'll definitely take your advice on board - if fact I'm going to save a printable version right now. Thanks again.