I've worked with LEHD data before, including in a GIS context so I can probably clear up some of the confusion. First off,
S000 does not represent a point, it represents an attribute. Secondly, I can tell that user26056 is working with Origin-Destination data because the GEOID's in the w_geocode are repeating and the
S000 usually shows a bunch of 1's for almost all records. Third,
S000 in the context of the Origin-Destination dataset represents the number of jobs held by people who live in the 2010 Census Block defined by
h_geocode and also work in the 2010 Census Block defined by
S000 equals more than just 1, although this probably happens in densely populated areas.
If you are interested, I made a tutorial back in Grad School along with accompanying example data that shows how to create heat maps using Kernel Density in ArcGIS. I hope it helps your situation.