I only just noticed that they now have a graph on the city statistics page (which apparently has been there since RESPO...)
Checking the Total Users graph, it shows the total number of Users, Guys, Girls, Couples and... Don- but what does Don mean?
[image: i.imgur.com]
Also, there are, apparently, 96234 females and 409531 males, which doesn't add up to 510662.
There is an extra 4897 users unaccounted for, even though I'm pretty sure you had to choose a gender when you sign up, and there are only the two choices: male and female, so... how was this possible?
[image: i.imgur.com]