Just saw this - a couple of things I should say or would like to clear up:
1 - My action was developed specifically for scanned film processed to A.net upload sizes (around 1024px) - the object was to optimise sharpness without running into grain problems. I wouldn't (and don't) use it for digital - my current preference is Focalblade for this.
2 - The point about pic needing individual attention - 100% agreed - my action has suggested default values - to use as a starting point - but 2 variable controls are included - 1 to adjust the sharpening, 1 to adjust smooting of non-detail areas
3 - This action isn't particularly clever - all it does is combine a number of sharpening techniques to avoid tedium.
a - edge masking (ie. selecting only those parts of the image that require sharpening)
b - channel sharpening - using the LAB mode to avoid introducing colour distortion on the edges
c - gaussian blur to smooth skies and other non detail areas.
Essentially, all it amounts to is a way of applying higher levels of USM
sharpening while delaying the onset of jaggies and minimising grain.
If anyone still wants it,
Colin K. Work, Pixstel