After years of speculation, months of testing, and some public demonstrations, Netflix has finally rolled out individual profiles for shared family accounts, one of the service’s most requested features. The new feature gives users the ability to create unique profiles for each member of the household, complete with separate settings, viewing histories, and instant queues. When using supported devices, a Netflix Instant Streaming user simply chooses the corresponding profile and then is able to enjoy customized content without contaminating (or…