Did you know you can use Excel to let people to sign up for an event? I use it every year for the staff Christmas party. I email employees a link...they enter their information like whether or not they plan to bring a guest or what menu item they choose...and when they complete the form, their response comes back to you in email form. You can have people submit one or two bits of information or hundreds--there's no difference to Excel. And you can instruct Excel not to send their RSVP unless they fill in all the blanks. Pretty cool.