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,

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.