Twitter’s first star

Thanks to her gift for 140-character witticisms, Kelly Oxford has transformed herself from Canadian stay-at-home mum to Los Angeles-based bestselling author and screenwriter. Hermione Hoby meets the woman all the celebrities follow

Are these the worst apps ever?

Huggies Brazil has launched a new app that tweets you to tell you when your baby has wet its nappy. Think that's bad? Well, there are possibly worse ones, writes Stuart Heritage

Twitter fiction: Meg Rosoff

The novelist and children's writer takes up our Twitter-based challenge to come up with a story in 140 characters or fewer