In that case.......
4) Get your website linked from other relevant websites
5) Create a press release for your website and release to all relevant media websites
6) Create a blog and update regularly
7) Submit a sitemap to all search engines and dmoz

Buy advertising and target your niche market
E.G:
Advertising | Facebook
Yell Direct—buy and manage online advertising | pay-per-click | free advertising » Yell Direct
Advertising opportunities at Amazon.com
AdBrite: The Internet's Ad Marketplace
Online Advertising - Microsoft*Advertising
eBay Advertising - Sales Representative