E-mail is great for dialogue within small groups, but use it for large-scale communications and you'll suffer an information overload of replies crowding your inbox.
This is where Zaplets (www.zaplet.com) come in. A Zaplet is a kind of e-mail questionnaire, where the sender defines the questions and the recipients fill in the blanks. Then all the responses are automatically collated and presented in your preferred format.
Number-crunching is done automatically on Zaplets servers. You receive one collective reply instead of hundreds of separate answers. Not only that, but everyone involved can log on and see the results being updated as they come in.
Zaplets are free and there are templates for the most common requirements. The only drawback is that creating a Zaplet takes a bit of getting used to, but it's well worth the effort.