To be used in reference with Facebook, "statusless" is to be thought of in a similar context to speechless.
This is particularly relevant in reference to a serial status-updater - you know there is something HUGE happening if they will log in to update you on the most insignificantinformation otherwise.
Katy: "Wow, what's going on Jayde? You always have something to say in your status updates?"
Jayde: "Yeah I know, I know... Actually there HAS been something rather huge happen, but it's kind of left me statusless as I can't find the words to say what I mean in a status update!"