Looks like a cool website, but after I test a few different keyboards it prompts me to subscribe. After pressing 'maybe later', it comes back again and again, only letting me test three different keyboards before bugging me again. Completely unusable.
"Completely unusable" is an over-exaggeration. By default, assume good will.
I couldn't even get the X box to work to close a particular keyboard and then select another. One time it worked but I couldn't tap on any other keyboards and I had to reload the page to be able to select another one.
EDIT: now it's working, don't know why it repeatedly wasn't.