[boonez123]

Seriously, you should start your ideally after you've done market research and determined that there is a definitive need for your service and/or product.

Too many start-ups don't do the research and totally just go straight to development. Mine included. Ie. http://www.plentyoftweeps.com

In anycase another startup I had I waited 5 years, craigslist.org had been operating that whole time and basically dominated in the markets where they had that 5 year run time, so I had to squeek by and penetrate markets where craigslist.org wasn't.

Anyway start ASAP with the market research. Ask people on buses, at restaurants, in planes, family and friends if they would use your service/product.