A twatcher is someone who
just reads other peoples twitter feeds and doesn't contribute
anything of their own to the conversation--a twitter voyeur. A twatcher may or
may not have a twitter account of their own.
Sarah: Did you see that textsfromlastnight Kyle tweeted last
night.
Haha, two guys.
Becky: You're not on twitter, how did you see that?
Sarah: Umm, it's called an RSS
feed.
Becky: Girl, you are such a twatcher!
Sarah: I don't like using at signs and you know that!