It's not a very nice way to ask! Go here http://www.frostwire.com/index.php?title=Main_Page & click on the "What's this?" link. It will explain. Basically at this point in time there's very little difference between Limewire & Frostwire. There may be some minor adjustments in the internal engine but all you'll notice as being different is the different skin/interface, etc. It was brought about after concerns LW was going to bring in copyright content filtering so all you'd be able to download would be non-copyright material.