Muse, Dan. Detect and Block IM - for Free. Enterprise IT Planet. Sept. 15, 2004.

Detect and Block IM - for Free Looks like this article was largely influenced by IMLogic, however still some good information on managing and/or blocking IM usage in the enterprise. References a free tool to block all IM usage. Emphasizes that SOX and HIPAA require archival (under certain conditions) of corporate e-mail "and similar communications".