Added a note about nginx http_gzip_static_module which doesn't get used as much as it should. One tip on the gzip parameters, I use -9cn. The 'n' flag is impor

Added a note about nginx http_gzip_static_module which doesn't get used as much as it should. One tip on the gzip parameters, I use -9cn. The 'n' flag is important as your gzipped files will not appear corrupted by many gzip online checking tools. E.g. everything is green: http://redbot.org/?uri=http%3A%2F%2Fsimeramov.com%2F2010-07-ocd http://redbot.org/?uri=http%3A%2F%2Fsimeramov.com%2F2010-07-.... Took me a while to figure it out. I believe it also benefits rsync. There is one serious downside to all this reckless optimization -- I don't even notice the bandwidth RRD graphs changing if some page hit the HN front page or get featured elsewhere. The pages are so small the graphs almost always look the same, i.e. basically flat :) All the bandwidth is from me backing up my home dir to server.