Photo Sharing, Mobile | featured news

Instagram, the popular photo-sharing service that Facebook bought this year, is the target of a storm of outrage on Twitter and other sites after a change in its user agreement hinted that it might use shared photos in ads.

Did "sexting" just get safer? Maybe, but probably not. A free and increasingly popular iPhone app called Snapchat allows users to take a picture, send it and control how the message is visible – between 1 and 10 seconds.

Can a two-year-old photo sharing app really be worth $1bn? It would buy you some some 2,100 Rolls Royce Phantoms. Or 200 million mosquito nets to fight malaria. Or the whole of the New York Times company (with $50m change to spare). If you are Microsoft, it buys you some 800 AOL patents to fight the next patent war.

What if you could see the cellphone photos taken by everyone within 150 feet of you? Would you be hesitant about potentially seeing yourself captured in one of those photos or would you be smiling as your inner voyeur jumps in joy?