Yes this is legal.  Yes it is a good deal:  for example: get Windows 7 Ultimate, Server 2008 R2, Sql Server, Microsoft Office Ultimate 2007, etc for $349 – 28%  of the cost using this code: TMSAM07   so the total cost is $251.28.  If you already have TechNet Direct, use the code to renew, and pay only $179.28 plus tax. $186.86 for me) 

People: this is good for ~10 copies of Windows 7 Ultimate, plus 10 copies of Office 2007 Ultimate.  all for HALF the cost of one retail copy of Windows 7.

go to http://technet.microsoft.com  and upgrade all your systems cheap.  Hurry, these codes don’t last long..

cheers.