They probably wanted you to join Chrome Plus, which is a totally different animal to Chrome. Chrome is a program put out by Google, Chrome Plus is a sort of "community" thing to make it easier for Google to collect and sell your details. Unless you are seriously into whatever teenage interests that it expedites, I would avoid it totally.
Because of the way that Chrome has bloated itself over the few years that it has been around, I am seriously considering dumping it in favour of the current IE, which, unusually for an MS product, seems to work faster than the opposition. It certainly uses less resources.