Just viewing the forum main page, and I notice there're a lot more online users than usual, for this time of day and actually, for any time of day.

It's only when I take a closer look at who exactly is online, that I see an uncanny amount of accounts all fitting under the same general properties: Real names followed by a 4 or 3 digit number.
For instance: Jessica1344, Michelle2220 and Tina344.

I'm not sure if I've missed something whilst away, or am just dumb, but could someone please explain this strange 'Phenomenon'?