Pakistani authorities block access to the social media website Twitter because of tweets they say are blasphemous and inflammatory.

Will Facebook keep innovating post-IPO?

Pakistan's government has imposed a countrywide ban on the social media website Twitter.

The founder of Facebook, Mark Zuckerberg, updates his status on his own Facebook page to announce he has married long-time girlfriend Priscilla Chan.

A look at a selection of internet companies that previously floated on the US stock exchange