Hey there,

I am really sorry for the delay of this reply as it is a weekend for us here.

I've checked in your site, it seems like jfbconnect plugin override that og:desc to get your site meta description info, if I temporary turn off all the jfbconnect plugin/extension from your backend, then paste your photo stream URL into Facebook debugger tool then re-crawl again the stream content, it will show correctly, you can refer on my attached screenshot below.

By the way, I already enabled back these jfbconnect plugin/extension on your site.