Bloggers twittering over new networking site

“I’m writing my story about Twitter.”

Answering the question “What are you doing?” in 140 characters or less is the very simple business model of one of the newest social networking sites on the Web, Twitter.com.

It’s called twittering, and founder Evan Williams said the site was created “more or less on a whim.” Now, with the site getting rants and raves from bloggers around the world and user updates reaching 900,000 so far in March, Williams told attendees at a Boulder conference on Weblogs and Social Media that it’s “taking over our lives.”

Williams, also a founder of ODEO.com and before that,…