My view is, this is a mistake. In particular, I see 2 fatal flaws in this approach...
- Your Twitter followers won't be anything like a target market (because it contains anybody and everybody)
- Most people who follow you back do so via an automated system, and may never see your tweets
Once you have at least 100 genuine followers who are in your target market, Twitter can be used to send targeted visitors to your site. Click the link and find out how.