Pretty interesting idea. The only catch is, anybody can run it  
through the Ruby interpreter to turn it into a useable readable email  
address...
that said, here's my super simple obfuscation, enough that a bot not  
looking for it would probably not know what to do with it:


puts "[]#*$e+w!^^+ob!*so*[]#*$e+@$===#!^.co===".gsub('*','n').gsub 
('+','r').gsub('!','i').gsub('$','g').gsub('^','l').gsub('#','a').gsub 
('===','m').gsub('[]','d')