all you should do- is read the EULA.
It's worse the Microsofts- basically- everything you do with Chrome- these forum posts, for example, or, say- blog entries, and so forth- it becomes property of Google. I haven't got a clue what that means but It probably isn't in the users favour.
Another thing that turned my away from Chrome was the hype about it being a replacement for windows. Which make no sense- that's like saying, "well, we introduced this new Honda, it's so revolutionary, it will replace the highway!"
Although I imagine there was a similar furor over Firefox when it was released.
any browser is more secure then IE, of course; chrome is probably no exception.