It's not much of a business idea, but I've recently been thinking about a way for communities (esp in high crime areas) to do an online neighborhood watch. IE, neighbors put webcams in their front windows and the site presents combined (customizable) views of these webcams a la security camera displays. What if Grandma could email the police a security camera sequence showing who vandalized the library? You could even imagine communities providing bounties for any tips leading to a conviction, so kids in India can protect Walmart parking lots for us.
http://blog.cyc.com/ - last post Nov 2009
http://www.cycfoundation.org/ - last post Nov 2008
http://cyc.com/cyc/company/press - last post Sept 2009
If Cycorp is dead, what is Doug Lenat up to now?