I posted a few things on Facebook in the first couple weeks, but then I read somewhere it's rude to the people not invited to the wedding, which I totally agree with. Most of my Facebook friends are adult enough to not care if they're not invited, but it's not necessary to post about it on FB. But I've seen so many friends do it! From asking for RSVPs, to going as far as asking for everyone's addresses! (that had to have ended in disaster!)
I feel like I know the general consensus here as most of you are very etiquette-minded, but do any of you go against the rules on this one?