There is much talk about how to handle hosting problems - it seems there must be an abundance of clients looking for a hosting service. Where does one hook-up with some of these would-be clients?
In other words; what are good ways to find clients who are looking for web hosting?

The best way to do it is to be friendly and helpful in forums like this, and don't stealth spam. People will get their impressions based on the attitude you present, the solutions or thoughtful commentary you provide, and then can visit the site in your .sig to check out the things you offer.