I reccommend all people that are herbers or miners to get the Gatherer addon with Gatherersync, What gatherersync does is when you or someone in the guild mines/ herbs something, then if uploads that data to your comp so that when you are looking for some ore/herbs you can open ur world map up are you can see all the places you and people in the guild have gathered it so the more people that have this, then the more you benefit from this =D

Gatherer link: http://wow-en.curse-gaming.com/downloads/details/24/

Gatherersync link: http://wow-en.curse-gaming.com/downloads/details/7227/

(you need both of these for all this to work and make sure you get the latest ones =D)