It's a bit disappointing that I have to sign up for an account, there doesn't appear to be a free-tier that is completely signup free (e.g. like tryruby.org, or a plethora of similar sites). I'm not denying them the opportunity to make money, but there is a user friction issue here to even take a peek.

I wonder if folks would be less cynical about this if they gave it a name other than 'the Wolfram Language' (how about 'Sym'?)