First known use of the ampersand used to reference a Twitter user on Twitter.
23 Nov 2006 - @kapowaz by @neilcrosby
(via anarchogeek maxfenton )
That’s not an ampersand, it’s an at sign, also known as an arobase, arroba, apserand (I hate that one. pointlessly confusing), ampersat (ditto) or a atnifier (I like that one).
This is an ampersand: &