Plus, we sent all guests a post-wedding follow-up e-mail to ask them to upload their photos to a centralized flickr account (i.e., I gave everyone the username and password).
Thus far, the only downside (knock on wood) has been that some goofballs are messing with our welcome message. They changed it from "Of a Feather" to "Sawubona" (sorry, Grandma and Grandpa).
I guess it's a small price to pay for 1,641 photos (so far!).
Five minutes later: it's now up to 1,675!
[Editor's Note: I just learned that "Sawubona" is a Zulu greeting that flickr cycles through. I'm an idiot!]