I’m sure there are dozens of ways to do this, but this is the one I like best since it involves twitter, which I was already signed up for.  ED: As noted in the comments, you can also update your status by using the Facebook Mobile application (Thanks Shasta!) but I encourage you to try out Twitter and the method below to update both at once, for the reasons I give below. As I said, there are a million ways to do this, but this updates Twitter and Facebook with a single text. I want to see more Etsians on Twitter!!

Step 1: Sign up for Twitter. If you are not familiar with Twitter, it is a micro-blogging platform which is essentially the same as the status update in Facebook and nothing else. There are a lot of great tools, like the Wordpress Plug-in Twitter Tools, which automatically updates your twitter when you post a new blog post with the link and can even generate a blog post of your collected status updates for the day if you want. Services like Twitterific (which I have not used) can update your status across many platforms including MSN Messenger and Adium when you update your Twitter.

If you can’t believe you have to sign up for another damn service, you can just sign up once for Twitter, configure it to update your Facebook (as I’ll show you below) and then ignore it forever. Your cell phone updates will update your twitter and you never have to look a it again, though you will be missing out on a potentially powerful marketing tool.

Step 2: Set up your phone on Twitter by clicking “add device” on your home page beside “Device Updates” and follow the instructions.

Step 3: Navigate to http://www.twitter.com/sixthandelm and “follow” me. This, of course, will not help you update your Facebook on your cell phone, but it lets me know you are there and I can follow you and see your updates.

Step 4: Log into Facebook and add the Twitter application: http://apps.facebook.com/twitter/. You’ll notice a link that says: Want Twitter to update your Facebook status? Click here!

Click “yes” and you’re good to go! Just text your updates to the text number twitter gives you when you set up your phone. It is best to start your posts with ” – ” or something else so that your Facebook status makes sense since twitter doesn’t append your message or put “is” in front of it.

(ED NOTE: THE TWITTER FACEBOOK APP IS TEMPORARILY DOWN FOR NEW SET-UPS AND SOME MAY NOT WORK YET, THOUGH MINE ARE DOING FINE)