Meetomatic - meeting scheduler

About Meetomatic: "The basic, free, public Meetomatic service (for selecting dates or AM/PM slots) is always available at http://www.meetomatic.com. This service does not require any registration, and there is no charge. You can simply use it to set up and arrange meetings. There is no catch, i.e. it does exactly what it says; feel free to try it and to use it for arranging meetings. No registration is needed, because we have found that registration is an annoying distraction that prevents services from being simple. There is a premium version available with extra features: By signing up for the Advanced service you'll be able to take advantage of our fine-grained time planning feature. Subscription is available for less than $20 a year, either on a rolling yearly subscription or as a single one off payment for 2 years. Subscription payments are handled through PayPal - although PayPal membership is NOT required unless you choose the annual subscription method."