If you are an avid user of social networks or if you want to monitor the hive mind for news about, say, a brand, a sports team or a celebrity, you know it can be hard to keep up across the different networks. Here's a solution. 48ers is a new search engine in public beta. It lets you search Twitter, Facebook, Google Buzz, Digg, and Delicious all at once. All you do is enter the search term and hit Search. By default, results from all five networks are displayed.