Mac OS X: PDFs are great, but constantly printing out endless amounts of documents wastes a heck of a lot of paper. The World Wildlife Federation has created their own PDF format that is unprintable in an effort to end that.
Right now, the file format is only savable and readable on Macs, but a Windows version is coming soon. The software is a plugin that allows you to save anything as a WWF file from the print menu in Mac OS X. It's basically the exact same thing as a PDF, except you can't print it out. It also adds a small explainer to the bottom of each WWF document.
I have to say, despite how annoying some might find being sent an unprintable document, it is an interesting idea. Being on a college campus, I see people go through endless amounts of paper every day for what seems like no reason, and even as someone who's not much of an environmentalist, it seems like a huge waste. Even of money, if nothing else. What do you think of the format? Do you think it will catch on, and if it does, would it drive you crazy? Or do you think it would help tone down our paper-wasting habits? Hit the link to check it out, and share your thoughts about the format in the comments.