Many of the companies you deal with like to keep tabs on what Twitter users say, but they rarely have a true sense of what the world is thinking -- are people spreading positive buzz, or is there trouble brewing? IBM doesn't want to leave that question open, so it just unveiled a deal with Twitter that will put all those tweets to work in the corporate world. Companies will get to use the Watson cognitive supercomputer and cloud services to sift through public Twitter updates and (hopefully) make smarter decisions based on the internet's zeitgeist. They'll know why their new widget is suddenly popular in New York, for example, or whether there's a lot of gripes about customer service. Don't be surprised if your favorite store or device maker soon becomes much more responsive to your desires... even if you've never voiced those concerns to the company itself.