I've been using this Chrome extension and only until just now, when I made a comment on a recent post and wanted to see what my sorting options were, did I notice that I do have this feature available to me... I still want stackable sorting options though...

And now that I'm back at this post... I noticed that in your image above. It depicts what appears to be the busy.org platform with the sort by reputation option being available... is this true or is that photoshopped?

cheers!