License question - UN Convention on Contracts

[Ann Okerson <ann.okerson@yale.edu>]

This inquiry comes from one of our Yale Librarians.  It was a new 
question for me.  Does anyone in liblicense-l land have 
experience of the UN Convention on Contracts?  Is it in wide use? 
What does anyone think of it?  Many thanks, Ann Okerson

***

  While reviewing a license for a U.S. demographics website, Social
  Explorer <http://www.socialexplorer.com/pub/home/home.aspx>, I
  encountered the following language:

  /You expressly agree to waive all rights, if any, arising under the
  United Nations Convention on Contracts for the International Sale of
  Goods. /

  Should I be concerned about this waiver?

  Thanks,
  Robin Featherstone