The famous adage that on the internet, nobody knows you're a dog is becoming a thing of the past (true to form, the cartoon is over 18 years old already!). With Facebook authentication being a popular feature of many sites requiring login and the recent upheaval about the Google+ policy of requiring real names, more and more sites know who you are.
Overall, this is a good thing. On various levels of an individual's online identity, it is useful to declare oneself:
- Authentication becomes easier (no need to remember different passwords for different sites, and when you get to a site you visit frequently and that requires login - the cookies do the job in the background)
