Delicious

A few years ago, I decided to use Delicious because I grew tired of only having access to my internet bookmarks from one computer. After securing a Delicious account, it was so easy to save a site from one computer. Since the service is online, I am able to obtain my favorite places from another computer at the library, a friend's house or another system at home.

Twitter

Twitter is an excellent tool to communicate with people that know about things you are interested in, things you need to find out and news.  In fact, the news you receive is so current, the event is just took place! For example, when the Iran Riot occured last year, Iranians were tweeting about the events. This made the rest of the world find out the occurrences at the time they were happening. This, of course, put traditional news media to shame :)