In the interest of saving some battery life, I am toying with option of turning social application sync (effectively off) by checking "sync over wifi only". I dont really ever use a wifi connection. I only use Facebook-what exactly are the implications of this? When I open Facebook, will it then sync? Or if i want to post something, will it work? I am also thinking of turning off "enable background data". What exactly are the implications of this in regard to widgets (like news, Fancy widget, etc). Sirius seems to still stream in the background with no issue. So, what will I lose by unchecking this? Will email or txt delivery be slow? Thanks all!