In fact, Writing Project teachers have found Twitter to be a serious learning tool. Many sites across the country integrated Twitter into their summer institutes this summer, and teachers have built "personal learning networks"—groups of people who casually join together to communicate and collaborate on common topics—where they discuss serious educational issues. (Grant Faulkner at NWP)
In other words, there are people tweeting things other than, "I'm painting my toenails the color of petit fours" and "What up, dawg?"
Any tweeters out there? How do you use Twitter?
As you can imagine, the Internet is alive with writing prompts. Here's a great source for such prompts: the Los Angeles Writer's Group photostream at Flickr. The Los Angeles Writer's Group blog is also worth visiting.