Without knowing what kind of service you're providing, it will be hard for many to offer any advice, or potentially good tactic ideas for you. Some general adv

Without knowing what kind of service you're providing, it will be hard for many to offer any advice, or potentially good tactic ideas for you. Some general advice I'd provide is: - Figure out the characteristics of your users. What kinds of people have the problem you're solving? Be as specific as possible, and segment into multiple groups. Think about age, gender, interests, activities, group memberships, places. - What kind of tools and services do those people already use? How do those services get their users? - Where can your different types of users already be found? What communities are they part of? What types of sites do they frequent? http://quantcast.com http://quantcast.com is a great tool for this. This list: http://socialmediaanswers.com/niche-social-networking-sites/ http://socialmediaanswers.com/niche-social-networking-sites/ and lists like it are another good one. - What kind of things do your potential users talk about? Can you find them using http://search.twitter.com http://search.twitter.com and http://blogsearch.google.com/blogsearch http://blogsearch.google.com/blogsearch ? Good luck!