Meg Whitman

You look at the tremendous success of Facebook. To my mind there is not a lot of commerce going on in these social networking sites. eBay is a community anchored in commerce. It is a commerce site that built a community around it. What has not been proven is if the reverse can happen and people will go to community sites to do commerce.

Hammer down product fundamentals first. Make sure you've got something that works before doubling down on promotion and marketing. Create a groundswell of organic support, and only then leverage PR and advertising to spread the word.