Which is more Efficient ? 1 Domain or More IF we've bought a lot of niche sites[ already made], which is more efficient for these niche, 1 domain for every niche or 1 domain for all niche like :- www.bla2.com/niche1 or niche 2.. if 1 domain for each niche, where can i find the cheap one?
Depends if you're interested in short term or long term gain. A good keyword filled domain like www.NarutoWallpaper.biz will get good search engine rankings fast but a domain like www.wallpapers.com/naruto/ could have more potential in the long run as www.wallpapers.com would have build up a higher PageRank from all of the categories and backlinks. Hope that made sense.