When I signed up to Twitter in early February 2007 I wanted as short a username as possible, and as Twitter was still young, I was able to get a three letter username - @tag - which are my initials (@tom had gone) to save on those precious 140 characters. Twitter didn't do tagging, and it didn't look like it could ever make sense, so I settled on @tag and have happily used it ever since.
But since Facebook allowed the @username reply (@username on Twitter is a reserved term, and no account exists) people decided to say that you could now "@tag" your friends. For a few weeks after introducing this, and various tech blogs mentioning "@ Tagging" my Twitter replies were, shall we say, a little busy. It actually made Twitter a lot harder to use for me. But thankfully it died down, and I now only get a few erroneous "@tag" mentions.
Hmm. I found out that this is the culprit tweet:
So now, hundreds of people have decided to start tweeting "Meet the Genius behind the creation of this site.. join me! @tag http://bit.ly/4DvS27 #followseachange" - slightly missing the point of putting someone else's username into their tweets.
I think I'll just have to weather this one out and see what happens. I really like my username, and don't want to change it!