Just to get back on my facebook 'happy birthday' comment soapbox... today I passed a girl that wished me happy birthday on facebook. We were the only two around; she wasn't distracted or anything, and yet she didn't even say hi, much less happy birthday. She passed by me as if she had no idea who I was. Given, the last time we talked was about a month ago, before I got my haircut, but all the same. Point proven. The final count was about 80 "happy birthday"s, from the most random people.
The flip side of that is that some of the people who commented to tell me happy birthday legitimately meant it, and I know who they are; they're the people reading this, texting me, talking to me on a regular basis, etc. and they're awesome and I have nothing against them wishing me happy birthday on facebook - yes, even when they post it in 10 comments in a row.
But seriously. If I met you that one time during freshman orientation... don't bother wishing me happy birthday on facebook. It's stupid.