Mark Bridge writes:

Watch almost any American TV show from the 1960s - I'd recommend a good police procedural - and at some point after a few episodes there'll be a scene in a restaurant. One of the main characters will be dining and their meal will be interrupted by a waiter bringing a telephone to the table. The phone will probably have an implausibly long cable, although there may be a telephone socket nearby.

Todd Levy of BloomWorlds.com talks to us about developing a family-friendly application store. He explains how he's trying to help 'Android parents' and their children - and why he's convinced there's room in the market for independent app stores.

Nielsen has been looking through recent research to compare the ways US teenagers use their mobile phones.

It says today's children watch more mobile video than any other group, with 12 to 17-year-olds enjoying over 7 hours of mobile video a month - compared to 4 hours 20 minutes for the general population.

Marc Allera, sales and marketing director at Three UK, is leaving the network at the end of this year. His role will be split between current sales director Amanda Lambert and new marketing director Tom Malleschitz, who's joining from Three Austria.

The news comes in the same month that Three UK CEO Kevin Russell has announced he's returning to Australia.

New research from comScore shows that the number of advertisers using mobile display ad campaigns has more than doubled in the past two years.

The figures, which come from research conducted in the USA, also show that mobile content and publishing accounted for half of all products advertised on mobile devices.