"Facebook" not an option for sharing photos.

I'm sure this has been asked a million times, but I couldn't find it. Does anyone know how to get this to work? :

I would very much like to post photos to my Facebook page. Selecting a photo from the gallery and clicking "share" is just about the coolest feature I've ever seen. Wow! Very intuitive, I found it right away.

However, even though I'm logged into Facebook, and my phone is aware that it's one of my social networks, "Facebook" is not listed as a place to share my photo. Any help I've found on this is about HOW to share a photo to FB (It's easy! Select share, then touch "Facebook"!) but doesn't help if you just don't see it there.

I am running Motoblur v. 1.4.8 MB200 on a T-Mobile Cliq, monthly plan. It is a new phone.