Here's a link from two days ago on the subject (!). Still I don't see whether it's a real, implemented technique or just a hypothetical one...
http://whatis.techtarget.com/definition/0,289893,sid9_gci550525,00.html

I note that while a) it comes from a rather overwhelming site for geek jargon, some highly technical, b) there are also links to some other interesting sites, like this one for Jonathan Swift-ian terms:
http://www.jaffebros.com/lee/gulliver/dict/b.html#bigend