Doodle

This is an interesting site! "Doodle helps finding suitable dates for group events, e.g., an appointment, a conference call, a family reunion, etc.. Doodle is particularly useful to people who do not use a common calendar.

What can Doodle be used for?
Doodle is extremely flexible. Typically, Doodle is used for scheduling events: Be it an assembly, a team conference, a business lunch, a dinner among friends, a general assembly, a workshop, an excursion, a company event, etc.

But you can use Doodle differently as well, for the exercise planning of your sports club, for instance, or to find out who travels to the company excursion by train and who by car as well as who has space left in the car.

Doodle is a Web-based service which is free and requires no software installation."