All the things you wish you had said

A new book shows how a popular blog has offered people opportunities to deliver witty retorts and express feelings that they thought would remain forever missed

Boris Johnson under fire for ‘hijacking’ mayor of London Twitter account

Labour believes migration of official mayoral Twitter account to support Johnson's re-election bid is misuse of resources

Pass notes, No 3,143: Chatterboxing

No, not vocal sparring but the act of tweeting while watching a generally moronic TV programme

Pass notes No 3,141: Pete Cashmore

The 'planet's sexiest geek' – boss of website Mashable – is in talks with CNN over a $200m deal. Not bad for a business he started in his teens

Bret Easton Ellis contemplates American Psycho sequel

US author delights Twitter followers with multi-tweet ideas session, finishing with tentative plans to start writing

Why bloggers need to be upfront about sponsored content

SE Smith: It's a good thing that more bloggers manage to turn their writing into a business, but their readers shouldn't be taken for granted

Snickers Twitter campaign cleared by ad watchdog

ASA clears marketing drive involving Katie Price and Rio Ferdinand tweeting about chocolate bar. By Mark Sweney

The 10 funniest Tumblrs

The blogging platform is a great place for aspiring comedians to showcase their skills. Here are some tumblelogs that will have you rolling on the floor laughing

Should Twitter sell old tweets?

Twitter is allowing companies to sift through its archive for market research purposes. Guardian journalist Grace Dent (sender of 43,081 tweets) and freelance writer Michael Hogan (21,135) debate whether this is acceptable