Yes!

The amount of eenergy wasted washing hardly used towels in incredible - the cards are a good idea and every hotel should have them

It concerns me that someone is excited about saving a few towels, when it is likely that everything else surrounding and leading to the use of towels is of greater significance. People traveling unnecessarily to conferences, often long distances (international), often by air, staying in hotels, eating generous corporate-sponsored meals, etc, are not what I would consider ecologically friendly.

To me, the notion that this research is about saving energy/water/whatever is a joke - it is just another weapon to be exploited to get people to do things, and those things are probably going to be geared more towards consuming than saving the environment.

-spxl