an introduction to social ontology

I just came across this superb introduction produced by the Cambridge Social Ontology group:

The term ontology3 derives from Greek, with “onto” meaning “being”, and “logos” usually interpreted as “science”; so that ontology, as traditionally understood, is the science or study of being4.

The word being has at least two senses:

1)  Something that is, or exists;

2)  What it is to be or to exist;

It follows that if ontology is the study of being it includes at least the following:

1) The study of what is, or what exists, including the study of the nature of specific existents

2) The study of how existents exist. This twofold conception is adopted here

http://www.csog.econ.cam.ac.uk/documents/AConceptionofSocialOntology.pdf