I played a lot more than a decade ago. I play just a game or two a month these days. At my peak I was either a strong 2 dan or a weak 3 dan (AGA). I think I had a 2 dan account on IGS.
Much of my understanding of go theory comes from reading Go World (the old magazine) from cover to cover for many years.
These days when I play, I think I confuse my opponents, because I pair terrible reading with good whole-board strategy.