[JangoSteve]

I clicked on it and nothing happened. Using chrome on android. I still have no idea what it is.

EDIT: [I realize you may not be the author, so this isn't necessarily directed at you] Also, the button says, "Try it, Subscribe", which implies that by clicking the button I'll be subscribing to something. I want to know what the button is and what it does, I don't want to have to subscribe to something to figure it out. Now curiosity got the best of me and I clicked anyway, figuring I'd just unsubscribe (whatever that means) if I needed to. Of course, I clicked several times and nothing happened, so now my curiosity is gone. The point? A demo button should not make someone feel like they're committing to something (unless that's the intention). And when someone asks what it is after reading the page, it's best to answer them and maybe add it to the page.