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Web 2.0 services are generating what is truly a personal learning renaissance.Here's a comment from teacher Elizabeth Davis at Classroom 2.0:"Following and reading blogs, participating in ning, contributing to wikis, writing in my blog, I haven't thought this much in years. It truly is an amazing phenomenon. I feel so intellectually alive. I'm inspired and challenged constantly. The blogs I read lead me to question and explore new tools and Websites. I haven't written this much since I was in school. It is all so exciting and energizing. For me, classroom 2.0 could just be about my own growth and learning and that would be enough."A good example of a free Web 2.0 service is Wikispaces. Here's a class wiki made with the service - A Broken World, the World War I wiki of a Grade 9 class. Their teacher comments:You are now "textbook writers." Your goal is to make a better, more interesting textbook than that overweight, boring, 20th Century history textbook you're now using. And to do work of such high quality that you can include it on your resume as another example of your academic skills in your "digital portfolio."Here are some other School 2.0 online services:* Diigo- for "social bookmarking" of Web sources.* Blogger - to create a class weblog.* Ning - to build your own social network]

Parents who install a leading brand of software to monitor their kids' online activities may be unwittingly allowing the company to read their children's chat messages — and sell the marketing data gathered.

Software sold under the Sentry and FamilySafe brands can read private chats conducted through Yahoo, MSN, AOL and other services, and send back data on what kids are saying about such things as movies, music or video games. The information is then offered to businesses seeking ways to tailor their marketing messages to kids.

a separate data-mining service called Pulse that taps into the data gathered by Sentry software to give businesses a glimpse of youth chatter online. While other services read publicly available teen chatter, Pulse also can read private chats. It gathers information from instant messages, blogs, social networking sites, forums and chat rooms.

To those who Twitter, the reporter who investigates a story before offering it to the public must also seem tediously ruminant. On Twitter, the notes become the story, devoid of even five minutes of reflection on the writer's way to the computer. I can see that there are times —an airplane landing in the Hudson, a presidential election in Iran—when this type of impromptu journalism becomes a necessity, and an exciting one at that. Luckily, reporters still exist to make sense of information bytes and expand upon them for readers—but for how much longer? I worry that microblogging cheats my students out of their trump card: a mindful attention to the subject in front of them, so that they can capture its sights and sounds, its smells and tactile qualities, to share with readers. How can Twittering stories from laptops and phones possibly replace the attentive journalist who tucks a digital recorder artfully under a notepad, pencil behind one ear, and gives full attention to the subject at hand?

I went home after the lecture and—hypocritically, I admit—updated my Facebook status and my blog to declare how much I despise Twitter.

Twitter serves as a source of links to longer news stories.