In the past month, TNW Africa has done several features on opportunities in Africa’s mobile sector and its ability to transform the way Africans go about their daily lives in various areas ranging from agriculture to governance. In a bid to further spur innovation in the continent’s mobile sector,Pivot 25, (an Mlab initiative) is set to spotlight East Africa’s mobile developer and entrepreneur community this June by launching the East African Mobile Developer Challenge in Nairobi, Kenya....

We’ve previously sung the praises ofPixable‘s Facebook, iPad and iPhone apps, which approach Facebook photos in a whole new way, helping you find the best photos posted by your friends. Now the New York startup is taking the same approach to videos. The new version of Pixable’s Web app, which rolls out today, presents your friends’ videos in a way that makes it much easier to find and watch them that the social network’s standard interface....

Pixabledoes smart things with sorting through the photos and videos that your friends share across a range of services, helping to make sure that you don’t miss anything important. Available as an app on Facebook, the iPhone and iPad, we’re fans of the ‘behind the scenes’ work it does to keep you up-to-date with the best of what your friends are sharing. Now, Pixable’s iPhone app has received an update that makes it well worth a look if you’re yet to try it....

Pixable’s PhotoFeedenhanced the way users could browse through Facebook photos, and today it got even better with the integration of Aviary’s Feathery API. We’ve covered Photofeedin the past, but with the addition of Aviary’s fun editing features such as filters and stickers, users now have a whole new way to tweak both their own photos and their Facebook friends’ photos. By clicking on the “Edit” button at the bottom of Photofeed, the new set of editing features are at users’ disposal....

Facebook’s API allows developers to present our friends’ photos in all sorts of new ways, and one of the best we’ve found isPixable‘sPhotofeed app. This app runs within Facebook and presents photos in a whole new way. It uses an algorithm based on the number of likes and comments each photos has, that Pixable calls ‘WonderRank’, to determine the most popular photos of the day, week and month, meaning that it should highlight the best photos you might have missed....