Actually I’m serious. I saw “ping” a lot but never did it.
Well, alright. Here's how it's done.
Look at the "To:" routing box above the text box you're posting in. You'll see that name of the person you're responding to. Note the instruction: "use semi-colons to separate multiple recipients".
Simply insert a semi-colon between each additional poster you want your message to go to, and the system will put it in their Ping box.
Like so:
tsowellfan; Windflier
That's it.