[Weasel]

Originally Posted by FASherman

Word of caution for US site owners: Using this hack unless you have already warned your users that their PMs are subject to monitoring and can confirm through some type of checkbox that you timestamp and save in the database indicate that they are aware and agree to the monitoring would be a violation of Federal Law under the Electronic Security Act.

Just the act of reading their PMs alone opens you up to both criminal and civil litigation. Under the criminal code, you can go to prision for up to 5 years. If you run your forums on your own hardware, it will be confiscated. On the civil litigation, you can be held liable for up to $50,000 per PM you read.

Is it worth it?

You should probably point out if you are not a lawyer and your occupation has nothing to do with law.