links for 2011-05-19 META Tags Tips: Metadata Elements (tags: <meta>) What You Need to Know About Usability (tags: -ility usability learnability visibility findability) To Visit, Or Not – That is the question get shit done (tags: toolkit) New Properties and Values in Backgrounds with CSS3 » SitePoint view plainprint? p { background-repeat: repeat repeat; } p { background-repeat: repeat [repeat]; } (tags: css3 {background:}) Idea for CSS-only responsive images using CSS3 generated content and attr() function. No browser implementation as of May 2011 — Gist (tags: responsivedev <img>) pretty tech, How you should use QR codes: A manifesto (tags: qrcodes)