Do-It-Yourself Weddings Many good ideas here.
WedFrugal This is the ORIGINAL. I believe Rachel was Frugal before the Frugal Bride was Frugal.
The Frugal Bride A Canadian site. Has become very merchandise-y over the years, but still has excellent advice. Even has an area for Grooms.
Frugal World The Bride's Page. An okay site, you have to scroll down and look around a little.
More Frugal World Bride Tips
Article Alley This is a giant site, with articles on everything under the sun, but there is a section on Weddings and Marriage, and it's all by The Frugal Bride. But I don't know which one.
The Frugal Life's Wedding Page The title says it all.