Your Body Text Is Too Small says Christian Miller, and he's probably right. He makes some good points about legibility versus readability and provides some examples of top sites that use pretty large text sizes on their sites.
Dos and don'ts on designing for accessibility - six useful infographics to help guide your decision making when it comes to accessibility considerations for deaf, dyslexic and blind users and those with autistism and motor-disabilities.
It may have been an April Fools' joke but the message can still be read in reverse and appreciated. The Nielsen Norman Group produced a cracker of an article called Difficult Designs Are Better (for Humanity) that highlighted various usability concerns, like how important it is to challenge your visitors by making navigation "joyfully suprising" and give nothing away upfront and instead force your users to go deeper on your site to find more. Brilliant!