Re: What is/does baal charm?
When "Baal charm" is mentioned, generally we're talking grand charms. A Baal charm, in the purest sense, is any grand charm dropped by Baal, but grand charms dropped by Nihlathak and Diablo also qualify. They're wanted because they're "rerolled" using the Horadric Cube recipe of the charm plus three perfect gems, and "Baal charms" are the only ones that can get the +41-45 life affix. A "proven Baal charm" will be one showing +41 or greater life. Basically, people use them when trying to get a grand charm with +skill and +41-45 life.
So, Baal Charm = a grand charm dropped by Baal, Nihlathak, or Diablo (in Hell difficulty).