Here are some quick tips:
1) make a press releases, there free, announce your product to the industry
2) participate in forums, offer advice if able
3) Look around, goto tgp sites, link lists, talk to there owners, sell your product!
4) Work with others in the industry, if your on there mind they may tell someone
5) Get listed on all webmaster resource sites, as a startup tool I recommend doing it manually or use:
http://www.resourcesubmitter.com/submit.html - its free, and cool. Do not forget niche listing spots like ones for free hosting galleries etc.
Now I must go.