What are the most interesting social learning platforms for use in corporate training programs?

Are programs that serve a social learning or communication of effective communication - the value of time and its importance - Planning

These programs help any employee to start work forces engaged in training and self-development

EBSCO Organizational Learning  is a good site.

Depending on audience, there are good choice's available, for Education moodle.org is very productive platform used by all major universities, for commercial purposes (corporate training), bloomfire.com is well in demand.