Very useful for hunters and feral druids (they get bonuses to damage, crit rate, and dodge from the improved agility).
Rogues also benefit from these effects, but as they attack using melee weapons, Windfury Totem is still considered better for them. Note that windfury will have no effect if the rogue is using poison on their mainhand weapon.
Somewhat useful for warriors and melee shaman(Crit rate, dodge), but Windfury Totem is far superior for these. Melee shaman will have their own, better Windfury Weapon buff, thus windfury totem is obselete, and this totem is more useful
Slightly useful to other classes (dodge improvement only).