posted 4:25pm EST Fri Oct 17 2003 - submitted by J. Eric Smith NEWS If you're like millions of other PC and Mac users worldwide, you've discovered the wonderful utility of instant messaging in one form or another. The digital equivalent of the venerable CB radio, instant messaging, or "IM" for short, allows you to instantly converse with another IM subcriber over a corporate network or the Internet, anytime, anywhere, for free. And that's a problem, say legal experts. At the top of the list of problems is the concept of corporate communications. For years companies have been bound by...