Line56.com: The Future of Collaborative Workspaces: "Never underestimate the power of email. It is a ubiquitous tool that requires virtually no training--similar to the powerful Swiss army knife. The problem is that even the Swiss army knife has its limitations, as does email. While very powerful, email is not inherently secure across organizational boundaries and provides very little structure for teams to work together. As the volume of email increases, important items are increasingly lost in a sea of information. Keeping track of approvals or the latest version of documents is difficult if not impossible. The bottom line is that email is an ineffective tool for team collaboration. The solution to the business need for managing communication exists, and it is surprisingly effective. "
By Rob Koplowitz, Oracle -- timely essay.