I am eager to get my Petrified Lichen Guard for some pally AOE-grinding goodness and am only a couple thousand rep short of meeting the reputation requirement (honored with Sporeggar). My rep is apparently to high for them to accept my stacks of Bog lord Tendrils or Mature Spore Sacs so I’ve got to resort to extreme measures.
WowReputationCalculator.com has proven to be an invaluable resource in determining which direction to take when grinding rep with a desired faction.
It works beautifully; you just enter your character and server name and hit submit, then the app then queries the official WoW Armory site and generates a listing of all your current (BC only as of right now) reputation standings. You then click on one of the factions and it provides you with the recommended zone quests, repeatable quests, and mob-kills needed to earn their love. The site also calculates the rep required and tells you exactly how many times you have to complete a repeatable quest or mobs you have to kill to reach the next rank (friendly, honored, revered or exalted). It even takes into account the wonderful human racial Diplomacy (+10% reputation bonus).
In my case, I only need to slay about 100 Bog Lords before I’m honored with the spore peoples.