Ken,
Well, I Know my putting stroke changed with the general trends, highlighted by tour pros, and maybe Golf Digest or something. Once a style becomes the newest in thing, you sure can get a lot of "you still use that?" looks.
Best putting lessons I ever got:
Use a grooved putter (Taylor Made Kingdom golf pro)
Dave Stockton (as a pro am partner) - There is no such thing as a read "on the lip, add up to 2", because the ball doesn't need to go into the front center of the hole on a breaking putt.
Hold your follow through (a la great photo of Crenshaw, still in pose, after sinking the 80 footer on Augusta 10) to encourage more follow through than backswing. Pelz instructor
Pace your putts to know distance (Pelz instructor) and spend time on the putting green to know that a one inch back swing goes "X" feet, and you will find a 2" and 3" back swing will go 2x and 3x that distance.
"Take no backswing on this putt" A Pinehurst caddy on the 5th green of P2, when the pin was near the front left bunker) Much better than his later advice that he "knew I was going to de-green the putt." When? "When I saw your putter move back."
And not really putting advice, but played Muirfield with Pete Dye who noticed I missed every putt left, leaving me to my own devices to figure out exactly why. After the round, I was using the urinal when he walked in, refused to use the one next to me, reasoning, "You'll probably miss left on this one, too!"
Not really putting advice, but more urinal humor.....after playing with Fuzzy Zoellar in a pro am, we were using the urinals, sparking the comment, "This is the only place on this course you can say you held your own with me."