A few years ago, some people were concerned that a digital divide would separate those that have technology from those that don’t. That doesn’t appear to be the case today if you consider the number of homeless people who have computers and access to the Internet. Take Charles Pitts, for example. Mr. Pitts is 37 years old and lives in San Francisco. He has accounts on Facebook, MySpace, and Twitter, runs an Internet forum on Yahoo, reads online news, and emails friends regularly to keep in touch. The difference