Yes - this can be done via PQ or other software - but it isn't possible to filter easilty on the main site - and produce a map or list of non-micros in a given area. I now go to some effort to avoid micros - because no real effort seems to be put in placing them and in many areas, looking for yet another film cannister at the bottom of yet another fence post really done spoil the walk rather than enhance it.
Maybe, people should eb educated not to splatter micros all over the place - but only place them in worth while locations - and where there is no placement for a larger cache.