Doodle is one of the easiest tool to setup meetings and events online and is absolutely un-intrusive. Doodle is a wonderful web app for scheduling. Users can create an event, add a list of potential dates and times, and send it around to other participants to vote on a final time slot for the event.
However, now you can also have a one-to-one meeting using doodle with it's new service called as MeetMe.
With multiple single signon support like Gmail, OpenID, Facebook and Yahoo, it's one click step to setting up one-to-one meeting.
