Mike Bergman's site has an interesting article on ESW, titled "Enterprise Semantic Webs (ESW) Demand New Database Paradigms", at http://www.mkbergman.com/?p=185. In fact, it's one of the few defintions of ESW availible.

SemSol seems to be connected to the Semantic Web Community Portal, http://www.semanticweb.org/, which has been on the verge of being relauched for many months ....

From the SemSol site, "SemSol is a forthcoming Web development framework that uses Semantic Web technology to significantly increase productivity and flexibility for everyday Web programming".

Also see http://bnode.org/, Benjamin Nowack's personal website.

The Inference Web is a Semantic Web based knowledge provenance infrastructure that supports interoperable explanations of sources, assumptions, learned information, and answers as an enabler for trust.

From the About CSAIL page:

The primary mission of CSAIL ( Computer Science and Artificial Intelligence Laboratory ) is research in both computation and artificial intelligence, broadly construed. It is organized into four broad research areas:

Systems covers all aspects of the building of both hardware and software computational systems

Perception and Learning includes work on the sorts of things that all people manage to do effortlessly, both emulating those abilities, and simulating their appearance.

Mike Bergman has written numerous insightful articles about the Semantic Web.

Link to BB.COM SOA Subject

Semantic web tutorial ( Static HTML ).