well here is a place to get some of those answers you just asked me there are links in green in this if you read them you will know .i am going to pull one of the links for you to look at the rest you will find in this article. here is the link that i said i would pull from article. 2,3,4 are links i out up from the web 5 is the article. this is just a start of what the fuss is about hope this helps