It's easy to use, it works with our accounting software (QuickBooks) without any problems at all! I would like that there was another option of creating reports or something similar so we can easily see what products are selling best in each department/store etc but this isn't really much trouble as long you know how everything operates within your store system already.
We've had great success using posiflora since implementing its features into Quickbooks; allowing us access from anywhere around world via internet connection has been amazing!!