Having recently joined the digital modes after picking up a Signalink and fldigi I've noticed an interesting phenomenon. When a particular mode gets discussed on this forum activity can pick up quite a bit as fellow zeddites play with it. When I first started operating PSK-31 before last Christmas activity was pretty sparse. As digital operating got talked up here in the forum folks started picking up Signalinks (you could see it in the "help" questions for set up! January/February/March saw a bunch of PSK-31 activity...then bingo bango..the Zed talked up FT-4 and PSK-31 died almost overnight and the FT-* modes bloomed. I've been watching the PSK-31 bandwidth for a couple of months with zilch activity. Suddenly today PSK-31 was hot again. That's to be expected somewhat, however, I've noticed a strong interconnection between forum activity and digital mode activity!