If you are frequent email user or rely your email during works, you will be seeing some of the sender that quoting a small sentence with a tree logo that asking you to save tree and think first before you print for the email or documents. This is a good reminder for all of us for the unnecessary paper printing.
However, I would like to introduce another good initiative by WWF for "Think before you print". It was saving your documents or files to another format with .wwf extension, with this format, recipients cant print it but only can view it or keep it. You are on your own to decide which documents can print and which documents cannot print.
Want to be cool and showing you care about the planet and support the initiative, download the apps here and start using today. Got question about the WWF format go to FAQ, you will find all the answers.
I already download and use it. What are you waiting for?