I need to follow this thread :-) I don't have a clue as to what most of my corals are and I especially don't remember where I got most of them. There are a few memorable ones that I can say who I got it from, but as to what type of SPS they are, I don't know. I keep a log of what it was sold/given to me as and where I got a frag. So why don't I know? Some of the corals change colors after I put them in my tank (lighting/different salt?), many changed colors when I switched tanks, in other instances maybe a parameter changed (kalc reactor stopped working and it took some time to get things stable again w/2 part) and some started to STN so they've been fragged and started all over again, and then there's the problem of changing colors when I move them to the QT/frag tank :-( Some I think I can ID using a book like Corals of the World, but I'm still just guessing.
Chip - you know about flower tags - why can't you come up with a "frag tag" :-)