Don't really know what else to say. I'm sure it sucks to spend a birthday behind bars. Hopefully he's allowed a few special privileges today.
A quick Google search didn't help me find how old he is, so if anyone finds that and wants to share it in the comments, please do so.
EDIT: Btw, you can write on his Facebook wall or send him a card if you'd like. His family is in control of his Facebook page now so he won't be able to see it, but I'm sure he'll hear about it.
Happy Birthday, Ross. You changed the world.