I used to think I was "pretty good" until my wife and I vacationed in Nashville for a week two years in a row. There you see people working as waiters and waitresses that can top anyone in your hometown (or at least my relatively small area). After I got over the shock, I think it did me a lot of good and I raised my standards. But to the original point, I comment on performances that I both like and that are at least above average. I keep in mind the fact that Vince Gill (fill in artist for your favorite genre) is probably too busy to post here and the average performer is a semi-pro "regular guy" although occasionally there are some outstanding performers on the various forums.