I suspect that's there to 'prevent' someone from copying the entire scripts collection, sticking it on a DVD and selling it, or collecting the articles into an ebook and selling it on amazon, not to stop you from using something posted here in your job.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability