Simple addon, created for shyrotam and his friends, posted here in case someone else also want's to check for ping.
Very primitive, may expand with GUI if needed, in the future. Depends on the amount of requests really. :P
Note that others must also use the addon for this to work. Those without it won't respond and their names won't be shown.
You use it by typing:
You can also add "GUILD", "PARTY" or "RAID" in order to check those specifically, by default it only pings raid or party.