Marco Arment has added a typeface optimized for dyslexics to Instapaper.
I'm happy to report that in this update, I added the Open-Dyslexic font by Abelardo Gonzalez. Its bottom-weighted characters are designed to reduce letter-swapping and increase differentiation between similar-looking letters, which improves readability for people with dyslexia. It's now the bottom-most option in the font list in Instapaper's text-controls ("aA") panel.
Nicely done.