Pro Explicit site mission is to connect indie devs with players
IndieDB isn't just a place where you can build hype for your game: it aims to be the definitive place where you should. Everything about the site's features and interface are designed to help devs present themselves, and to kindle user interest in new games.
Pro Large overlap with Desura userbase
Desura and IndieDB were initially both operated by Desura Group, and shared a single user database. Linden Labs obtained Desura (only) in January 2014 and the sites' user bases are now split, but extensive crossover remains. Interest built through IndieDB can translate directly to sales on Desura.
Con Poor metrics for popularity tracking
Your game on IndieDB has a popularity ranking, but it considers only the past 24 hours, making it only good for noticing spikes in attention. Individual pages have hit counters, which can provide a more lasting record of interest but must be tracked and compared manually.