There are a number of social networks around. These are great for keeping up with family and friends, but using too many at once can be overwhelming.
TweetDeck is a good solution. It allows you to manage your Twitter and Facebook accounts right from your desktop.
You can see all your friends' posts and updates in one location thanks to streamlined columns. Global filters help you pull topics of interest into one space.
Plus, you can update both services from one location in real time or with scheduled updates.
System: Windows XP, Vista, 7; OS X