App is set to go public and is seen as the only serious challenger to Facebook’s audience

Victoria’s Secret, ‘Tubbies’, Cinque Terre tourist quotas and anti-Brexit bosses

Its profile is set to soar in 2016, but what is the photo and video-sharing app all about?

Video adverts planned on Snapchat

Microsoft co-founder has net worth of $79.2bn, ahead of Carlos Slim and Warren Buffett

Three-year-old photo-messaging company closed fundraising at $486m in quiet filing

Giant database of pictures which users thought were deleted released on chat forum

Start-up raised money earlier this year at a $10bn valuation but has no turnover

Snapchat is third-most popular app among millennials after Facebook and Instagram

Pioneer of self-destructing instant messages in talks about selling stake to Chinese internet group

The Snowden revelations shook the tech giants, but they had plenty of their own problems to deal with

Davin’s Law: “Technological old age is the point at which you have more social apps on your smartphone than you have friends whom you actually want to communicate with on a regular basis.”

This week: Clogs, doodles and diamonds