Another request: allow embedding videos.
Youtube supports two styles of embeds: using an <iframe> (either html5 or flash, according to the browser) or using an <object> (flash). However, SS doesn't allow the <iframe> tag. And if you click the 'embed' button on a video, you're given only the iframe embed, there's no flash option.
However, you can still create flash youtube embeds on SS today, by building the HTML yourself. Just paste this code, and change both
the URLs to the correct one. Make sure both start with "https://". Untick "Disable HTML in this post" when you make your post.
<object width="480" height="385"><param name="movie" value="https://www.youtube.com/v/TND_sT5GXZ4"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="https://www.youtube.com/v/TND_sT5GXZ4" type="application/x-shockwave-flash" width="480" height="385" allowscriptaccess="always" allowfullscreen="true"></embed></object>
Unfortunately, all existing youtube videos embedded on SS no longer work, since SS switched to https!! Oops!
I discovered that existing embeds can be fixed by changing the "http" to "https" if the URL is of the form http://www.youtube.com/v/TND_sT5GXZ4, but it doesn't work for URLs of the form http://www.youtube.com/p/85380983E180136D (like the video posted here). Apparently Google decided to break all those links. Seriously? Bad Google >:(
Would there be a remote possibility of doing a search/replace from "http://www.youtube.com/v/" to "https://www.youtube.com/v/" on all forum posts? There might be some other URLs broken too.
(Also, it turns out that Chrome autoconverts flash youtube embeds to iframe ones. I don't know whether this gets around the http-embed-on-https-page problem too.)