Animate a mesh using bones rotations instead of shape keys I'm using the mesh found in this link
which is animated using shape keys. I'm wondering how I can do the same animation but using bones (armature) instead? So if anyone could please advise.
You can drive those shapekeys with bones, this is actually the preferred way of doing facial animations. This video explains in a detail how to setup the drivers and hook the bones to the shapekeys. In the first part he creates all the face-expression shapekeys and in this second one he drives them with bones.