I havent been on for a bit and now people are saying 'Ping me' What is it, and how do you do it..? Thanks

Just when you add @ in front of a username. They then get notified that you mentioned them and where.

Okay, thank you very much :]

Like this! :D

Oh cool, pinging works for everyone now! :D The other day it was just for people who had only letters in their username.