Sign-Up Genius

Have you ever been in charge of the food for a meeting and needed to make sure the different categories (salads, crunchy, desserts) were all covered? Or maybe you need donations to make ice cream and you received 15 gallons of milk when you only needed 3 gallons. 
Here is a solution for the group signup: SignUpGenius! A basic account is free and can send emails and text reminders, sync items to a calendar, and includes an unlimited number of allowed participants.