Groupon provides a new service to help individuals and organizations manage all the stuff they buy/sell on Groupon
The tool is based on technology from a Canadian company it bought last fall, OpenCal.
Groupon users will be able to book appointments when they buy a Groupon, or wait till later. They can also change or cancel appointments online. Users can also continue to schedule with the merchant directly.
The tool will let merchants track their customers, including what other appointments they have made and how much they spend during each visit.