We've always used the cards and ours had a picture of both of us so others could get a hint of "who in the heck was that"? We've made lifelong friends by meeting up in various parts of the country as we traveled. Full-timers seem to go in circles and often we'd send out an email stating where we were and surprisingly we would get a group together. Sometimes when we'd be boondocking on public lands we could gather about 10 others to join us for some fun - 4-wheeling, geocaching, pot lucks or just good conversation around a campfire.
Full-timed for 16 Years . . .
Traveled 8 yr in a 2004 Newmar Dutch Star 40' Diesel
& 8 yr in a 33' Travel Supreme 5th wheel