New business/employment opportunities spawned by social networking websites

When Mark Zuckerberg launched Facebook, or when Twitter was launched, the founders were sure that they are launching a revolution in the way people connect to each other and dispense information. But, what they did not know, is that they this would also lead to opening of new entrepreneurial and employment avenues for those who could cash on this innovation. And it is surprising for us too, to see such avenues opening up. Of course, now there are companies which develop apps that can enhance the visibility of your products and service on social networking websites, but the fact that such an arena has opened up is astonishing. Let's see a few examples

1. Twitter analysers: Various news dispensing websites now have twitter analysers. Some of it is automated, e.g. tracing the hash-tags  or twitter handles and displaying them on the website. But there are people employed to collate tweets from various sources and then display the most interesting ones. Almost every website or newspaper has a section dedicated to celebrity tweets. These can be movie personalities, sports-persons, politicians, social workers or anybody who is a "celebrity". Because there is a section of people who would devoutly consume the news generated by these tweets.
   
   Customer-care departments of various organisations have started keeping a look-out on twitter feeds to identify adverse comments and see if they can be addressed. So, you can either have a person who does this work, or write a piece of app or software that can do this job for you. Infact, the app can perhaps sort out complaints based on the product and forward it to the customer-care of that handling the particular product.
   
   Insurance companies too have begun using twitter and facebook analysers. These analysers try to see what were upto, during the time the incident, for which you have filed an insurance claim, occurred. A case in Bengaluru was reported, when the insurance company denied accident claim to a driver because he was DUI. And they traced it to his tweets, when he had posted about being at a friends place and enjoying the alcohol. The timeline of the tweets matched with the time of the accident. And insurance generally doesn't cover for claims if the driver was DUI at the time of the accident.
   
2. Facebook: XYZ likes "This person should be killed for what he did to the girl". I bet you do not want to "like" such frivolous pages. So, what do you do? Try and search whether that link is available elsewhere. And invariably you would find it on bypassfanpages.com. This website has spun a business around Facebook users' dislike to "like" frivolous pages and yet see their content.
   
   Now, companies that design and maintain websites also have a Facebook arm, which designs the clients' content on a Facebook page. So, there is a need for personnel who can design content on the Facebook pages for the clients.
   
3. Thieves and burglars: Thieves and burglars have now begun to hunt through facebook status messages and tweets when they plan for their next heist. So, be careful, when scream on your page "Offfffff for a week to Maldives". Information is being mined for such potentially dangerous use too.

Have you come across any such interesting leverage of twitter, facebook or any other social networking sites to build a business around it?