Super cool wedding planning website

A co-worker of mine emailed me a link to a cool wedding planning website called Muse Weddings. It's a social community of creative people that share wedding experiences, and a place where you can keep all your wedding ideas, tasks, and budgets in order. I played around a little and really like how clean and easy the interface is. Best of all, it's free! It would be cool if it had a guest list feature, but maybe that's something they'll add one day? They have a place to give feedback on the site, so I might throw that in there. What other features do you think a wedding planning tool shoudl include?