This morning I found two eQSL cards in my in-box. One from Zacharias SV3GLL from Greece (SSB qso 2 days ago on 20m) and the other from a Short Wave Listener (SWL); YL-RS-01, Alex from Latvia. The last is my first card from a SWL who reports a 12m band QSO. I do not make many contacts on the 12m WARC band (24 MHz).
eQSL is an easy and nice method to exchange QSL cards in a digital way. I use it for over 5 years now; no post stamps required. If you are interested have a look at www.eqsl.cc
But of course the paper cards remain the real stuff !