Yeah, somewhere in the last few days DH read me a statistic that some fairly substantial majority of FB users access it ONLY via mobile.

Every form of communication shapes the content, I think. Cripes, DH still prefers a listserv. I don't know how many of those are even active - or what the median age of participants in the three lists he participates in, might be! As I kind of do here, I wonder how many people who *didn't* get our first Internet wings on CompuServe or AOL, still prefer the threaded forum format?