Editing Long tail (section)

===Competitive impact===
Before a long tail works, only the most popular products are generally offered.  When the cost of inventory storage and distribution fall, a wide range of products become available. This can, in turn, have the effect of reducing demand for the most popular products. For example,  a small website that focuses on niches of content can be threatened by a larger website which has a variety of information (such as Yahoo) [[Web content]]. The big website covers more variety while the small website has only a few niches to choose from.

The competitive threat from these niche sites is reduced by the cost of establishing and maintaining them and the effort required for readers to track multiple small web sites. These factors have been transformed by easy and cheap web site software and the spread of [[RSS]]. Similarly, mass-market distributors like [[Blockbuster Inc.|Blockbuster]] may be threatened by distributors like [[LoveFilm]], which supply the titles that Blockbuster doesn't offer because they are not already very popular.