The MDID 3 demo site has new content to match the images available on the older MDID 2 demo site.
At this point the only available functionality is a preview for the new explore feature. More features will be added to the demo as development progresses.Please note that in order to see any content, you have to log in using "demo" as both the username and password.
Since this is still an early version, you may run into bugs - please feel free to post comments in reply to this post, but hold off on reporting them via email (unless it sets your computer on fire or something of similar magnitude).
Edit 04/16: A login and password is no longer required.