To those talking about focus groups, I agree with what's been said already, but just wanted to add a little. When we started our company, getting people to attend our focus group was part of our startup process. We didn't have a lot of money, and obviously didn't have a big enough budget for any kind of decent advertising or marketing. So our goal of the focus group was to demonstrate and get a group of 50 people to use our product and service and to review it, give opinions, thoughts, complaints and suggestions, and what they liked/disliked about it and what they liked better than our competitors and what they didn't. It was a great way to spread the word.
We had 50 people come in, and at the end of it we were lucky to have built a solid product and service that they were all happy with. They were all given our business cards, which had our company name and website address on it and they were also told when our launch date would be. Without any other form of advertising, we had over a thousand unique hits to our site within its first week.
Now while this approach won't work for everyone (in terms of expecting large volumes of traffic coming from a focus group), it is a great way to get to know how people expect to be able to use a service/product, what they like/dislike about yours, and what they like/dislike about competitors. You can learn so much from a focus group meeting.