App discoverability is a constant thorn in the side of developers. It’s also an obvious annoyance for consumers who have to spent time sifting through app store chaff to find the bits of software really worth downloading. Amazon looks to be considering both sides of this problem with a new feature — called Billboards — it’s just added to the Kindle Fire and Fire HD app store. Announced on its blog Thursday, Billboards aim to act like posters for apps by announcing their existence and enticing people to download them. Read the full story at Tech Crunch.