Well, there is not a big story about it. LW is one of the fastest P2P client using the Gnutella filesharing network (others would be Frostwire and Phex -which are comparable good).
LW has some 2 million users (AFAIK) and is under constant further development and adjustment to fit the needs of a growing network.
LW offers a free basic version as well as a Pro version. With a price of $ 18.88 (for the pro) it is cheaper than a Mercedes and only slightly more expensive than a Big Mac..........
Wanna know more......read here:
http://www.limewire.com/ 