tall-tom, no need to back-track. Your answer was great! I mean, seriously now, if someone had a site they could point out to someone else and say: "go here to such & such, and you'll likely find easy seateds and barbers with 4-star signals ...". I mean, seriously, no one with such a spot they've researched out, is likely to tell total strangers on a public forum, of such site. They'd merely work it out themselves! And if they've done the homework, you can hardly blame them.
The best site-tips someone's going to get, is for other to tell them general starters, like "old stage stops, fairgrounds, campsites, old parks", and so forth. And yes it's true that the newbies are often picking up the same old tired history books, that were already exploited by the old-timers 10, 20, and 30 yrs. ago. But as you say: there's always more history to be researched, and always obscure history sources that can give yet another spot, etc....
Another source of a fresh new spot, which can occur at any time, is to watch for old-town urban demolition sites (like old town sidewalk tearouts, etc....)