Actually ping is waaaay more nerdy than tag.
Ping goes back to c:\ command prompt stuff. Way back to Windows 95 or earlier. Super Geeks will be able to confirm.
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Ping might be nerdier but it doesn't really relate to tagging someone in a publicly available message board such as this (or facebook or twitter , etc.)
Ping in the context of your post is a network command used to check the availability of another computer/server, not a person.
Tagging on the other hand is used to link someone (or something) to a post or tweet or whatever. Sure, tagging someone in a post sends them an alert that they have been tagged but it isn't the same as pinging them.
Nerdy enough?
FTR:
The ping utility was written in December 1983 as a tool to troubleshoot problems in an
IP network. The author named it after the sound that
sonar makes, since its methodology is analogous to sonar's echo location.
#supernerdmoment