Issue: A screen reader will try to “sound out” hashtags or handles that run together. The result can sound like gibberish. All-lowercase hashtags can also be misunderstood by on-disabled users. 

Who’s affected: Screen reader users, people with cognitive disabilities

WCAG standard: Guideline 3.1.2 – Readable: Language of Parts

What to do: Use camel case on hashtags and handles (ThisIsCamelCase)

Recommended tools: Accessible Social is a great site for this and other social media marketing accessibility tips.