Where is the fun in spending your entire vacation on Facebook?

A few weeks ago one of my coworkers went on a last-minute, one-week vacation trip to Japan and then China, with a pit stop in Germany. During that week, I kid you not, he updated his Facebook status at least twice every hour. He’s a serial poster to begin with, but he went bat-shit crazy during his trip. Usually I check my FB once or twice a day and each day when I logged on, there they were, at least ten new status updates from him. He started posting about his trip the moment he found out that he was going away and didn’t stop until the returned home. He posted everything, including minute-by-minute accounts of where he was, what he was doing (i.e. showering in his airline’s first class club’s bathroom in Frankfurt, eating a pulled pork sandwich in Tokyo, visiting Hong Kong Disneyland, etc.), who he was with, and so on and so forth.

I very rarely post anything on FB and when I go on vacation it doesn’t even cross my mind to go on the internet, I disconnect from everything. Now, I’m not judging his decision to spend his entire vacation updating his FB status (well, maybe a little), but wouldn’t you agree that it’s a bit counterproductive to do so at such a constant rate when you’re supposed to be enjoying the places you’re visiting and taking in the sights? He’s the most aggressive offender I’ve had on my FB, but a good number of my friends are guilty of this too, though not to such an extreme degree. Why do you think people do this? Is it just another way to show off? Or is there some legitimate explanation for this behavior? Am I missing something here?