Cleanup Vertex Weights Is there any way to cleanup/remove empty vertex weights?  Namely, on each vertex in a mesh, remove any vertex weights that have a value of zero or something close to it.

Note that I am referring to something more distinct than vertex groups.  When you have a vertex selected, a "Vertex Weights" tab will appear in the Properties Panel, and it will list all of the vertex weights affecting a particular vertex.



Stuff like that in the image.  I'd like something to remove all of the vertex weights that are at 0 from each vertex.  Or any that have a weight of less than 0.001, since the display there only seems to go out to 3 digits past the decimal point.
You want to be in Weight Paint Mode.  From there, goto Weights >> Clean.  The settings for which threshold you want (if its other than zero) can be found on the tool shelf, on the Clean Vertex group Properties.