Unfortunately their price is really steep, and their only including 3 RFID stamps whereas with the TikiTag you get ten.
The video above is a good explanation, and a good introduction, to the first generation of ideas connected to The Internet of Things. Most likely both The Mir:ror and Tikitag will be the driver of what is to come.
Below is an explanation of Tikitag, remarkably similar.
Keep an eye Tikitag/ideas for a heads up on new ideas and uses.