I love the fact that Twitter brings lots of great information right on my desktop and keeps me informed of what my friends are doing throughout the day. Sometimes though, I want to just search quickly for a specific piece of news or an event. This is where Twitter search comes in. I can narrow down my search by date, subject, and even who I want the information from.  Definitely a must have if your following many different types of tweets. Check it out here:   http://search.twitter.com/advanced