Just trying to think of a couple of recent Mudcat related ones - not necessarily directly from the forum but certainly through people that I've only come across because of MC...I tried to cut a bit of lapis lazuli and got some jasper as a result of comments from Don Mexeiner - I'll never be a crafsman by any stretch of the imagination but its fun trying with stones.
Used Sygate to internet share on Justa Picka's reccommendation and am very happy with the software.
Seen lots of recipies I want to sample...
The general knowledge base (I mean not just music) here is pretty impressive...
Jon