Don't despair if you're looking to leverage wiki to increase your business's exposure. The first thing to remember is Wikipedia is the big show. Having a bat and ball doesn't mean you can join the Yankees. Or even the Blue Jays. Businesses that get their own page tend to be notable. Notable means a lot of "dead tree" press coverage, usually of the national sort. Until you're being covered by your local daily paper, CNET, and a few blogs or news websites that Wikipedia considers notable enough, don't even try to get your company written up in Wikipedia.