There are also other uses. For example, I was planning to buy a new mini-laptop (MSI Wind just for illustration) and following the tweets with this keyword (via

There are also other uses. For example, I was planning to buy a new mini-laptop (MSI Wind just for illustration) and following the tweets with this keyword (via Summize search) was very valuable - you see links to new reviews almost instantly, and you can also get good impression about the product from the tweets like "MSI Wind arrived yesterday and my wife loves it", or "I like the keyboard on my new MSI Wind", etc... In my understanding, the revolutionary thing Twitter did was, that they enticed users to input information, which they didn't enter into digital form before. Lot of those are just unimportant noise, but with proper filtering or searching one can extract valuable information from it.