I too do not know TigerHeart (I just started reading his posts when I downloaded Mazzlefizz's UI).
The one thing I did learn from TigerHeart was his post about Auctioneer.
For God knows how long, I've been using Auctioneer exclusively.
The way he presented his case (from the memory usage to cheating the prices) turned me away from the Auctioneer addon.
It is trully sad that he was taken from this world way way too early.
Yes, Eric Simmons made a difference.