Twitter seems to have hit the mainstream recently. I've noticed the occasional article online mentioning this, and just heard something on BBC world (radio) about it.
I gave up using twitter about a year ago, maybe more. I am an early abandoner.
I didn't just give up using twitter specifically, I gave up on using this messaging technology in general. My interest in the web and online communication has waned dramatically.
I really think blogs are shit and no one reads them, so after I blog for a while, I then kill it and destroy all of the posts. Then I resurrect it and realise I probably shoudn't have deleted all the posts - some were interesting, and some were actually useful...but only for me. So I don't care if no one reads this, because it's for me. Need to call it a diary, not a blog.