I wouldn't necessarily send employees to these forums - love the information here, but it can be quite a drain on time spent working once you really get "into it" - i'm a perfect example of this. If employees were traveling over 50% of the time, asking them to join this site would make sense.

As for firm-wide training - absolutely. So much time, energy and money can be saved by knowing the ins and outs of the travel industry. It would only take 1-2 hours to impart enough knowledge to save a company thousands of dollars a year, and begin to create extrodinarily savvy travelers.