Use more promises
TODO:
 - Implement ohhla.com Top 30 daily scraper
   - Find comparable for other genres?
 - Clean up tweetMash!
 - Build 'garbage collection' for tweetQueues (trim, remove associated from queue cache object?)
 - Text file parsing?
 - GET OTHER EYES TO LOOK AT THIS
 - Abstract out to more modular 'recipe' formula (e.g. this bot has 'ohhlaTop30' and 'flickr' components, format of '(ohhlaTop30 item) (flickr item)')