I upload the photos I like to PBase. That way they can be "shared" in various ways (and what good are they if you can't share them?).
Of course, PBase is a "public" host -- I get several hundred "views" just in the course of a day (and occasionally someone actually leaves a comment). And, it's been useful when I've shot an event in which there is some interest -- I have a quick way for interested parties to check things out.
And, there are family and friends who, if I've done photograpy with them involved, again have a quick and easy way to check things out.
Also, there is Facebook -- if I do some shooting that Facebook friends might find interesting I can either upload shots (I've been using the Lightroom "Publish" feature lately) or I can post a PBase link either on my Facebook Wall or on that of an interested friend, or in a message or whatever.
And then, there is POTN! I've been active here for several years, and "sharing" photos has always been a part of the POTN experience for me. It's easy for me to link a shot from PBase here -- my PBase uploads are set to the POTN "regulations", so no muss and no fuss for me.
And then, a couple weeks ago I was visiting some friends on Christmas Day, and they expressed some interest in my photography. Well, in a back room they had a laptop set up that was "hooked" to a widescreen TV hanging on a wall. So we were able to go to my Pbase site, and to my "Favorites" gallery, and run a PBase Slideshow -- a very cool way for up close and personal sharing!
'Course, if someone is visiting in my home, I have prints framed and hanging on my walls, and hundreds of smaller 8x10s, 5x7s and 4x6s laying around. Plus, I can do a slideshow from my laptop/TV as well...but I don't get a lot of visitors, just occasionally!