#NotOnFacebook
Some people make their Facebook accounts very visible outside FB by including links in email signatures, public profiles etc, thus encouraging more people to use Facebook (or use Facebook more if they already do).
What if some of us who don't use Facebook encouraged more people to think beyond FB by similarly making it visible that we don't use it?
Maybe by including a #NotOnFacebook hashtag in profiles / signatures, and/or linking to preferred communication channels instead?