I liked the last two posts on your blag. They were cool. I especially liked the Taco Bell programming bit. I've never used xargs in that way, but I definitely will be doing so in the future.
This seems like a solid (ish) way to generate random salts in PHP. Thoughts?
$salt = md5(rand() . microtime())
It seems to me that this is about as good as it gets. Some of the things people come up with are a lot more convoluted than this, which puzzles me.