Google Search By Image: Use a Snapshot as Your Search Query. Wonder if it will do faces – that’s sort of scary. Maybe match fingerprints?
Useful :nth-child recipes. Nice examples that clarify the concepts.
A terrific article by Karl Groves called Barriers to improving the Accessibility Game Plan makes a number of good points. This article is worth studying and then putting into action.
How screen readers speak a page with HTML5 and ARIA. Fast read/listen makes an important point in no time.