[pomke]

Thank you that is fantastic advice, especially given we don't have any budget for a big marketing push. Do you think that basic advertising (google adwords etc) is worth doing at all? Or should startups stick with only this kind of personal, one-on-one sales pitch to customers they know will go and evangelise their products?

[blackboxxx]

I'd hustle and follow Seth Godin's formula first. It will tighten your pitch and increase your understanding on how people use your product. With this information, your Adwords campaigns will be so much more effective.