I Have never heard or seen that

I've never seen it with the word and but I used it in my gamer tag because the one I wanted was taken, and with an x it is still short and sweet. I use it for everything, even my email

People on Xbox usually do that

Well the original name is taken but you can still have the Beamer by replacing one of the letters withy a X or something else e.g silence is taken you could have silxnce