new pretty pictures of address space visibility

[k claffy]

  http://www.caida.org/IPv4space/

(from hwb who didn't want to post 
cause the text isn't really ready
but i figured nanog folks wouldn't
read the text anyway and the pictures 
speak more to than the text will anyway)

this probably belongs on big-internet
or ipv6 some other list i'm not on and
don't know if exists anymore anyway
so delete/forward if you want

k/hwb

ps yes it would be nice to have animations
of this in real-time throughout the last
few years but we don't have such 
historical data so oh well

comments/feedback welcome anyway