Social Learning Systems

Instructional Design Models

Here is a very comprehensive listing of instructional design models and theories from Jay Cross.

Best I've seen:

http://jaycross.posterous.com/instructional-design-models

More information on Jay Cross.

Corporations Set Social Networking Guidelines

The following link presents the policies for more than 80 corporations. It provides a wealth of information and ideas for those who would like guidelines for their own companies or organizations.

http://socialmediagovernance.com/policies.php

Guidelines from Microsoft, Plaxo, SAP, Sun Microsystems, US Government agencies, and various non-profit organizations are included in the extensive list.