I would update the status of a couple of Facebook fanpages through their Twitter accounts, but can not find a way to synchronize directly (without using a specific Twitter client to write the updates). The Twitter application for Facebook will not work because it only allows you to synchronize an account.
I found the solution: http://apps.facebook.com/smarttwitterpages/ With this app, you can set a twitter account for each fanpage that you have
You can use Selective Tweets to do this.
Once setup you simply end your Tweets with
#fb and they will be picked up and displayed on your Facebook profile.
I should say that this works with Fan Pages also.