Popularity: 40% [?]
For anyone who spends a significant amount of time on the Internet exploring new sites, the process of having to create a user name and password for every new site becomes drudgery. It seems that sites have so many different password rules that make it impossible to create one user name and password for any site you go to. This process undoubtedly turns potential new visitors off and increases site abandon rates.
Popularity: 15% [?]