With the most recent postage hike, stamps are now 41 cents a pop. Traditional wedding etiquette calls for you to not only mail an invitation, but include a pre-addressed, pre-stamped RSVP envelope with each invitation. Even if all these extra papers don't drive the weight of your envelope up beyond the max for regular postage (in which case you'll pay an arm and a leg extra), you still might be looking at a few hundred dollars just in postage.

If you really want to have a by-the-book traditional wedding, you're not going to be able to go this route, but if you don't mind the idea of breaking a few "rules," you might want to try using Evite for all your web-connected guests. It's a free service that allows you to design your own invitation, which is then sent directly to all of your guests by email. There's a link in the evite for your guests to RSVP electronically, so you can check the website to keep track of who's coming without having to wait for your guests to [remember to] mail in their responses.

In my opinion, it's much easier and more organized than going the old fashioned paper invitation route, and the fact that it's free is icing on the wedding cake. You can still send traditional invitations to your more tradition-minded guests and the ones without web know-how, so you'll still have that keepsake invitation for your wedding album, but for everyone else, evites can save a lot of hassle and money.