Craigslist is one of the best social networking/new media/natural media sites on the web today.
Telecraig, or http://www.telecraig.com is a search engine that searches ALL of Craigslist--every single city, every single job section--to find any job or contract with the word "telecommuting" in it.
The down side to this is twofold: any mention of "no telecommuting" pops up on the search results, and all of those ridiculous "Make $4,000 working 6 hours a week from home" ads appear.
However, if you're looking for specific work--as an editor, a Ruby on Rails programmer, or data entry, for instance--you can enter your search topics and see what comes up.
So far, I've been interviewed for two positions I found on Telecraig, one in a city I would never have visited on my own. Because telecommuting is not area-specific, Craigslist might consider having a "telework" page that is global and appears in all markets. For now, though Telecraig.com has to fill that role, clunky as it may be.