[grishnak]

About cenarion expedition, herbalists might want to optimize their reputation gains by :

* Killing nagas around lakes up to friendly
* Turn in unidentified plant parts up to honoured. The best place to farm these is on the mushroom giants in the dead mire or in the western parts of the zone. You will also grind sporeggar rep doing this. They can be "skinned" with herbalism and will often give a plant part, zither by looting or herbalism.
* Once honoured, turn in and continue the normal quests.

This can of course be done by non herbalists, as unidentified plant parts drop from every mobs, but this will be way too long and boring in my opinion.