I am going to circumnavigate Wrightsville Beach, NC for my b-day. I am wondering if there is an app for the Droid X that would post my progress to facebook as I paddle.

I beleive you can use Google Lattitude to automatically update your location using the DroidX (I have done that) and the set it to automatically post those updates to facebook (I have not done that) a little googling should tell you how