I wrote up an article on my blog about 10 questions you should ask your clients before doing a web design project. I think the topic is extremely important to us here at Powered By Geek as it helps us when working with new clients. If you are a web designer or even a potential client of a web design firm, I suggest you check it out:

What You Need to Know Before You Begin : Questions to Ask Potential Clients Before Starting a Web Design Project