There was an example on last week's TwiT of some American cold-remedy company scanning Twitter for people saying they had a cold, and @-ing them with a discount

There was an example on last week's TwiT of some American cold-remedy company scanning Twitter for people saying they had a cold, and @-ing them with a discount voucher. http://twitter.com/Zicam http://twitter.com/Zicam There's also the sub-group of 'enterprise social networks', helping people within an organisation connect better.