I also play a lot of World of Warcraft, which is very public about player achievements (i.e., open web site to query/view anyone), and very private about time played. They provide lots of detail about your own time played, but no way to see that for anyone else. The master point display in BBO seems like a similar achievement, and the number of logins seems a lot like the hours played. It seems like logins should be an optional display, probably opt in, since lots of users are technically unsavvy.