Wow, I didn't know someone was already making these (mini displays for the pins). I have seen a few small runs in the past, but nothing large scale like this.
I actually starting working on my own in the past couple months for TZ that I was about to reveal here on pinside.
Good thing I only made 10 of them, as it looks like it will be hard to sell them with this new competition ;o)
They are made with 2.8" lcd displays, running from a raspberry pi. So they are a little bit bigger and more expensive, but also have the potential for interactivity and customization, also larger SD cards for long video. But other then that, serve the same purpose.