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Facebook just keeps growing. The online social network where people connect and reconnect, post their thoughts, their snapshots, their Facebook friends and latest fancies, had 100 million users last August. 150 million in January.

And yesterday, Facebook confirmed that it had signed up its 200 millionth user.

Broad swaths of young Americans now simply assume they can catch up with anyone, anytime on Facebook. Now older users are pouring in, too. And users around the world.

But as Facebook grows and evolves, so do the questions about where it’s going, where it’s taking us.

This hour, On Point: The age of Facebook, and where the online social network goes next.

You can join the conversation. Is half your life on Facebook? All your life? None of it? Where does Facebook take us?

-Tom Ashbrook

Guests:

Vanessa Grigoriadis, contributing editor at New York Magazine, Rolling Stone, and Vanity Fair. Her new article, on the cover of New York this week, is “Do You Own Facebook? Or Does Facebook Own You?”

BJ Fogg, director of the Persuasive Technology Lab at Stanford University. His forthcoming book is “The Psychology of Facebook.”

More links:

You can now find On Point on Facebook.

And keep up-to-date with Facebook news at insidefacebook.com.

Slate’s Farhad Manjoo has been writing enthusiastically about Facebook and social networking. In January he wrote “Everyone else is on Facebook. Why aren’t you?”

Less enthusiastic — in fact, downright hostile – is The Weekly Standard’s Matt Labash in his hilarious rant last month, “Down With Facebook!”

Thanksgiving is upon us. Time to reconnect over the bird and stuffing with family and friends, old memories, maybe new friends and shared intimacies.

But guess what? A new generation of American teens is doing all that every day, nearly every minute of every day — without the turkey — online.

The Internet is producing the most socially plugged in, caught up, networked and aware generation since — what? Maybe the Mayflower.

Parents worry about all that time online. A big new study says, “chill.” The kids are OK.

This hour, On Point: Gen Web speaks, about the new American youth culture unfolding on the Internet.

You can join the conversation. Is your head spinning from all this social media? How do you keep up with all your friends, and how many of them are behind the computer screen?

-Tom Ashbrook

Guests:

Mizuko “Mimi” Ito, a research scientist at the University of California, Irvine, studying new media use, especially among young people in the U.S. and Japan. She’s the lead researcher on a recently completed three-year study of teens and the Internet by the Digital Youth Project, supported by the MacArthur Foundation.

Ebele Anidi, a freshman at Harvard University. He was an intern with On Point last spring.

Anna Huerta, a junior at the University of Southern California, where she studies interactive media.

Sarah Polin, a freshman at Redondo Union High School in Redondo Beach, California.

More links:

You can read a two-page overview of the MacArthur Foundation study, download the 30-page white paper, and examine the full report.