[ujj]

I think age really is an important factor in starting business and it works to ones advantage depending on the kind of business as well. For starters, I don't think there is any substitute for experience and like kyro said, it also gives one a certain level of maturity in dealing with issues like finances and emotions. Especially family, which tends to get ignored (to say the least) if you are a twenty something hacker working 28X6 in your mum's garage.

I have personally felt a little off balance seeing people lose color when they see me in person. Since my business requires a lot of off line interaction with people, they generally become a little wary on seeing someone in tees and jeans. If you are going for such a business, your age, and more importantly your maturity will be your biggest asset.