It amazes me how many times I've seen people wanting a website "like this". Where this indicates another existing site. And every time, I have to give a slight sigh and shake of my head. Turning to other sites for inspiration is definitely a wise thing to do. In fact, when you are designing yours, the second thing you should do (after keyword selection) is type a couple of your keywords into the search engines and look at what the businesses at the top are doing. These are your competition. More to the point, they are the most successful members of your competition.