A niche is finding your area to blog about or to try and dominate on the web. Certain niches can be very profitable, if the users you get to your site are valuable to advertisers and if they spend lots of time on your site. If you are looking to set up a site - ideally find a niche that is something you are interested in and something you can generate good revenue from. Hope that is useful. Mark
According to' Wikipaedia', niche "appealing to smaller segments of larger markets". There are 'niche's, sub niches, micro niches, eg golf, this is a niche, but it is general, and therefore difficult to get results, but delve a bit deeper and you come up with, golf clubs, golf balls, golf lessons, golf tips etc etc I hope this gives you the picture... Good tips on finding niche markets are1) Google trends', click on' hot searches'.(2) 'Yahoo buzz', this shows latest top searches. (3) 'Aol hot searches'. (4) ' Ebay pulse' click 'popular search'this gives you an idea of what people are looking for.(5) Amazon best sellers, tells you what people are buying.
Niche means anything with common central idea belonging to the same race or category. Niche is an important part according to marketing point of view to segregate the market which relates your business so that your target gets more closer to goal oriented.
niche, is the topic or what category your site belongs to... I don't know if there are some other meaning of that in English dictionary.