[EGreg]

Come as a tourist. You do not need to be physically in SF to run your business. In many countries (not all) you can continue to work for your startup or clients outside the country. In fact, you should have an existing startup established in your country.

Startups and self employment are truly a great way to open doors and attract others. I recommend everyone start one at least on the side. Traveling is good for networking. Think of it that way!