rainbow

This might not defeat rainbow tables, but I think there are probably easier ways to harvest email addresses than to generate rainbow tables and troll for gravatar URLs.

Everyone invests based on expected profit at the end of the rainbow, and a lot of money is made selling to the next set of investors who want to carry on rainbow-chasing.

There exists rainbow tables for millions of passwords for many of the most used network names.

The key derivation is salted by the user's full name to prevent the generation of rainbow tables on the algorithm.

If you're using Twitter as a source for company logos, you might be serving a lot of rainbow icons this week!

This specific project gained a lot of steam after Facebook's pride celebration - all the rainbow pictures pushed some folks too hard...

Unless we really think that people are going to get into rainbow tables just to extract some email addresses.

I remember reading about this in one of Richard Dawkins' book (I think its Unweaving the rainbow).

I also think (3) you could craft a known challenge for the microsoft server and rainbow table the response.

The rainbow flag is overloaded and has deeper semantics than gay pride.

I bet there's a pretty straightforward reason to explain these rainbow fringes, if one were to dig into it, though.

Without making any compromise to readability, without the rainbow zebra bands.

The trippiness is further compounded by the rainbow-ish colour effect produced by the recursive function, which mimics the "shimmering" rainbow effect you commonly get around lights when tripping on LSD.

While I agree with your idea about fractals (though you're a bit vague on the math details to know for sure), I also believe that a large reason the images look so "trippy" is because there is some local contrasting effect at work, generating high-saturation rainbow fringes at the edges of details and features.

The "salt" --- which, so far as I can tell, is a term used almost never in academic crypto research --- defeats one very effective exotic attack: the "rainbow table", where an attacker builds a database of perfect hash:: string correspondances.