Need to Meet Scheduler

Do you have problems scheduling meetings with your colleagues and send numerous emails to get it together?  Well Need to Meet might be the answer.  First off you don't even have to join.  Secondly it is incredibly easy as it prompts you for each step.  Essentially you give the date and time of potential meetings and send a url to friends who put in their preferences and without a second email you will have a date and time for your meeting.