drmike
100% Tier-1 Gogent
Well aside from getting traffic from forums and local users there's not much you can do unless if you have a big budget. Advertising wont work well if you target international clients (your budget will be over before you know it). You would spend lot of time on marketing than on advertising.
There is a lot one can do. This applies to any and all businesses. However, it will consume time in lieu of money.
Marketing is the core of everything. Advertising (paid) should come from marketing PLAN as one of the many prongs of awareness and brand building.