Karsten Solheim -- founder of PING -- developed this wildly popular design in 1959.
And some of us are still using it in 2019...here is mine-
To the OP-
Remember when we could go to our own activity page (or someone else's page) and take a walk down Memory Lane and remember the different threads we commented in, when we became friends with someone or who's pages we commented on for the past few years?
Well, I just did a quick check of six of my friend's pages (mine included) and it appears that that is no longer possible. It looks like all of our activity history, prior to December 23, 2018, has been scrubbed clean...vanished.
Sure, some of you might already know this and some of you might say, "Who cares?", but for me...I'm going to miss those walks. Ten years of memories gone...thanks WGT.