> If sites could provide a permuted index in accessible format I'm not going to dismiss this out of hand, but this is a harder problem than you realize. We did

> If sites could provide a permuted index in accessible format I'm not going to dismiss this out of hand, but this is a harder problem than you realize. We did have search keywords at one point. The problem was that sites started stuffing them with irrelevant values. Google removed that and started doing their own analysis, because keywords made it too easy to game SEO. There are certainly ways that keywords could be done better today, I'm not going to say we should give up on the entire concept. But asking websites to self-categorize themselves is a very tricky problem that is very prone to abuse. Remember that the web (currently) monetizes eyeballs, so until that situation changes there is a strong incentive to show up in every search regardless of whether or not you're relevant.