They think it's pointless, narcissistic. Some don't even know what it is.

Even so, more young adults and teens - normally at the cutting edge of technology - are finally coming around to Twitter, using it for class or work, monitoring the minutiae of celebrities' lives.

[...]

Pew researchers also found in a report released Wednesday that the number of people ages 18 to 24 who use some type of status-update service is growing quickly, too. They attribute much of the growth to Twitter.

"So much of this is driven by community. I'd even call it a tribe," says Susannah Fox, a Pew researcher who was the new report's lead author.

She said the survey also found that wireless devices are increasingly a factor in Twitter involvement, as in the more you have - laptop, mobile phone and so on - the more likely you are to tweet.

Read More