A team that included writers, designers, scientists and educators worked together to put together the package of images the public saw, and the alt text was not an afterthought, Rhue said. He said the team had a relatively short period of time to produce those descriptions. He only saw the photos a week before the public did. But they had spent the previous two years discussing accessibility and working with a consulting agency to create an alt text stylebook. During that process, they practiced writing descriptions and learned what didn’t work. “I had thought that brevity was a really important thing. That’s a common misconception,” Rhue said. He pointed to the saying “a picture is worth a thousand words” and said the recent images required more words than that to fully capture them. “There were more than 1,000 words written about each of those pictures, and we could keep going.”

Companies should experiment with interactive social media content types, include relevant calls to action in posts, and avoid posting too frequently.

Accessibility on Social Media So you want to be more inclusive online? Excellent! Whether you're looking to improve your personal social media or accounts that you manage professionally, there are a lot of basic best practices you can implement to make your online presence more accessible. Ultimately, this makes a big impact on the experience that users with vision and/or hearing disabilities have on social media. Below you will find tips, tricks, and information on digital accessibility. These resources are by no means exhaustive, but are a good starting place for creating accessible and more inclusive social media content. I've also put together a quick and handy checklist to help you double-check the content you create for common accessibility pitfalls.

Now http://www.digitalgov.gov/

geared toward helping social sites get sign-ups and users, but applicable to behavior change