We found a dynamite article which will be interested to every domainer serious about running a good business and staying out of trouble.

The 10 US legal issues covered by this article are:

Domain Name Sniffing
Trademark Issues
What Entity Should I Use
What State to Legally Form Your Company
Piercing the Corporate Veil
Business or Hobby?
Donating Domain Names
Employers vs. Independent Contractors
Inaccurate Registration Information
Depreciating vs. Deducting Domain Names

The author simply states the current law on each of these issues and then discusses possible pitfalls. While the author is not offering legal advice (only an attorney you hire can do this and only after understanding the details of your specific situation and the State laws that may be involved), he certainly provides some good "heads up" advice about issues to consider.