Microsoft patent on " The idea of zero"

This  is an interesting patent filed by Microsoft :
 "“an operator that returns true when two memory addresses are not equal”!
Have a look at it @

http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220040230959%22.PGNR.&OS=DN/20040230959&RS=DN/20040230959

Also, have a look at the "INTELLIGENT CONTAINER INDEX AND SEARCH" patent filed by microsoft 3 days back @

http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=120&f=G&l=50&d=PG01&s1=microsoft&p=3&OS=microsoft+search&RS=microsoft