Wedding invitations and the accompaning STDs are the last vestigates of snail mail. If it were up to me, I'd use Facebook to do the work. And in about 5 years, that might be the norm. In fact I had the brilliant idea of skipping all that and sending out an Evite. We could have used the hide-the-guest list option so that everyone could comment back with their snail mail address and we'd have them all in one convienent place to forget about 4 months from now when we send out the actual invitations.
We also had to decide what exactly we were sending out. Do we send an ordinary post card, or a little note or something kitchy like a button with our engagement photo on it. This was one area that I chimed in. Most guys don't care about little details like the color of the table napkins, the font of the wedding program, or the guest list. Some guys only care that the biggest day of their life -- outside of the NFL draft pick -- doesn't conflict with a playoff game of their favorite sports team. I've carefully picked my moments on when to ask/insist/request something and when to let my better half make the decision.
I'd like to say that I put my foot down and said we absolutely are not sending everyone a chessey picture of us. But the truth is, I not only don't have a problem with that but think its one of the few moments in life when it is 110% absolutely all about you. The reason we didn't go with an engagement photo is becuase we just didn't have our act together enough to get one printed in time to get the STDs out.
I did insist on magnets however. Even though it goes against every fiber of my don't spend more money than you have to DNA i figured at least a magnet would serve a purpose beyond reminding people of our wedding date and website. Years from now, people will still have their grocery list supported on their fridge with our magnet.