Ok, i was sending a message to a friend through xbox .com, it said on the actual list that he was playing Facebook, so i went on into his profile to send the message when i noticed something peculiar, it said he was last online 34 minutes ago but underneath it said "Xbox Dashboard - Using Facebook".
So i went ahead and sent the message, and then went to my actual xbox's Friends list to check it out, see if it was the same, but alas, it just said offline for 34 minutes.
Here's a Screencap, i censored most of the Players information out, because i wasnt sure about the rules on posting about specific members, and i didnt want him getting spammed with "HOW U DO THAT?" and stuff:
So what's up with that? is he appearing offline and it somehow glitched or something else.