As a relatively new member I wish I had known about Mudcat from its inception. I only got to know MalcolmD in the last 4-5 years and I missed out on a lot of banter with Bruce Olson which grieves me a lot.
Like some of the other contributors I am a member of a couple of scholarly lists, and whilst these are very useful and helpful, they simply do not have a fraction of the membership, so when I put out a request for info on Mudcat I'm pretty certain of an immediate and knowledgeable response from a whole host of well-meaning people, and if I get on my high horse as I do occasionally I know someone will immediately bring me down to earth, and that's a good thing.

Then there's the sense of humour and sheer love......
Mustn't forget the music itself!