Question	Yes or No?
1. Will it appeal to a specific type of customer, in a way that the mass market does not?
2. Does it utilise rare services, like off piste skiing from the example above?
3. Do you have access to a specific set of customers, with common travel desires, who you could attract as customers? The classic example of this being a shop front in a good location, as the shop front can be the key where customers like personal contact. A second example would be belonging to a special interest group. I recently read about a successful niche travel business that provides tours to see operas.
4. Would your company be the only company providing your proposition?
5. Do I have a good personal knowledge of a specific product or market? If so, is this the core for my business ie offering a high service level to customers?
6. Is there a specific demographic that it will appeal to (eg Saga holidays)?
7. Will the traveller have access to specific expertise or like minded people eg ski trips organised and run by expert skiers?

If you can answer "yes" to at least one question then it's not just a "me too" idea.