[OT] Software patents for the obvious (and not so obvious)

[Klaus-Peter Schrage]

... navigating among hyperlinks via tab key:
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,785,865.WKU.&OS=PN/6,785,865&RS=PN/6,785,865

Not so ridiculous and more annoying is Microsoft's attempt to patent and 
lycence "Sender ID", proposed to the IETF as an anti-spam security 
standard, see eg.
http://www.debian.org/News/2004/20040904
Klaus