> Irritating for screen sharing with people who use default putty settings, small size courier new, default colors. Ugh. Savages.

I'm visually impaired, so if I were to screen-share my PuTTY window, you'd be treated to 22-point bold Consolas and mostly white on black.

This points out, though, that for accessibility, frame-buffer sharing is really not ideal. What we really need is some kind of high-level content sharing, where the content is re-rendered on the viewer's machine with their settings.