Happy Birthday Jesta! I know here, I always miss things, birthdays included, when I'm having a 'poof' day. It's not even a self-absorbed thing, it's just a general 'I have no head' day. Maybe on the other forum, things just sort of conspired fate-wise where an awful lot of people had heads which were elsewhere at the same time, you know? It doesn't mean it doesn't hurt, but it could be a plain old reason. You could maybe post something where you've officially changed your birthday to the 15th or 16th and see if anyone picks up on the oops before leaving somewhere you seem to really like.
I hope it was a good day anyway. I love Amethist's cupcake- it's certain to blow up my own resolve about sweets today!
Anni