maybe this is old news, but I hadnt seen it anywhere before. Apparently on pokershare they have a new feature called the "playmate" which will basically give you a ton of info about your opponents, tell you how strong your hand is, calculate your odds, tell you your chances of winning against his likely range of hands, and will even suggest a course of action.
you can read it here
I guess from a site POV it makes good sense, it turns even the most hapless crap player into a much better player, and allows him to keep his money longer and thus run it through the rake machine many more times. But if every site started doing this, it would be a TERRIBLE thing for those of us who do this for a living. I shudder at the thought