Twitter and facebook are to faster growing sites online. F you are one of theose who use both twitter and facebook then here are some tools which will help you update both networks simultaneously without wasting time .

The twitter application on facebook helps you post your facebook status on twitter. Welcome to Facebook | Facebook

To Auto update twitter status on facebook
Sign up and use Twitter on Facebook | Facebook

To post your twitter status on facebook use the selective twitter app Selective Tweets on Facebook
This app allows you to post selective tweets to facebook just by adding the hastag #fb to your tweet

Tweetdeck : you can update facebook with twitter from tweetdeck too

Hello txt is a great site to update both statuses simultaneously