Welcome back to our regular round-up of the best stories, features and interviews you might have missed over the past five days.

As ever, some of the the most interesting developments came from the world of social media. Facebook, as it evolves its ad strategy, and Twitter, moving towards its IPO, have both seen an incredible rate of change of late. But this week it was some of the other social networks making a splash.

LinkedIn announced an impressively wide revamp of its mobile offering, while also revealing some telling usage stats; Pinterest landed $225m in investment; and Instagram announced its plans to trial ads.

Meanwhile, Argos announced that 16 per cent of its total sales come from mobile, and revealed plans to launch a transactional app before the end of the year. Just last week, the retailer launched its own Android tablet, recalling Tescos launch, a month ago, of a tablet named the Hudl.

With Christmas approaching, retailers mobile strategies are really worth keeping an eye on, with developments expected in just about every area of mobile you can think of.

We also spoke to a fascinating range of companies this week. Nexages Todd Tran and Victor Milligan talked Kirsty Styles through the mobile exchanges operations. As curated listings app YPlan launched on Android, CEO Rytis Vitkauskas told me about the companys plans for world domination. 

Finally, you can listen to our interview with Unruly Medias Sarah Wood, talking viral videos, from YouTube to Vine.

Until next week, thanks for reading.
Alex Spencer

Online Editor