Ask HN: List of local start-ups around Palo Alto/Mountain View

We have a service specifically geared towards small start-ups. We are not yet ready to announce the service publicly, but want to approach our potential customers for partnerships.

So I have a question. This will probably seem like a silly question but I wanted to find out if there is a comprehensive list of start-ups around Palo Alto/Mountain View. What do you guys use? I have tried the CrunchBase database but the quality of their data is very bad. There has got to be something somewhere.

Another related question is about places that founders hang out at. I know there is the HackerDojo community in Mountain View. But are there others in this area?