Hi all,
first of all i hope this is no repost. I searched for "sporeggar reputation" in the wow-guides forums.
So this guide is easy only for druids and rogues because they got stealth. Maybe mages also can have a use of it, because of invisibility, but i did it with a rogue.
My way to get exalted with Sporeggar is to make stealth runs through The Underbog.
Just easily farm Sanguine Hibiscus, wich also drop from the bosses in there.
From Friendly to exalted you'll need 260 Sanguine Hibiscus.
If you're already exalted you alternatively can try to sell them to people that want to get exalted and don't play a rogue/druid.
Good luck and have fun farming them