I ran across Twubble today. If you like/can’t live without Twitter this is a great tool/website to find your Twitter friends’ friends. It’s written by Bob Lee that works at Google.
If you use Twitter, Twubble can look at your existing friends’ friends and recommend new people for you to follow. It’s a stupid simple idea, but I think the execution and fun factor have won people over.
Try it out. It’s amazing how many friends you can find by having this tool examining your friends.