TV's Misha Collins, a co-star of the CW's Supernatural, has developed an outsized fan base online, where enthusiasts not only follow him but support his causes in big ways. His 438,000 Twitter followers have raised nearly $500,000 to help rebuild Haiti following a major earthquake in January 2010.
"Technology has changed the fan/actor interaction quite a bit. Now it's really easy to communicate with a large group of people in a really short time, and that … opens a lot of possibilities. You can do a lot of things with it that you couldn't do before. It's kind of fun to figure out how that can be employed."