It has been awhile since our wedding (like 4+ years), but I still enjoy the site The Knot. Of all the wedding websites I have tried, I think this is one of the more comprehensive ones to use in planning. It is very detailed and there are tons of articles. I have never been to the message boards, but I heard the community there is great, and you can get ideas, advice, and encouragement for your wedding planning.
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Keeping up with the Moys 