(In Chrome) If you right-click anywhere on the text and select "inspect element" it will select the #comments div because it covers the whole page. Then on the right-hand side of the dev tools you can add to "element.style". Adding clear:both; to this fixes the issue.
Spotify aren't "logging into the users account" as suggested, the user is signing in with their fb details and by adding an app to their account fb reactivates their account. The issue here is only one of poor communication, not of illegal account access. Saying otherwise is disingenuous.
Indeed, the web player isn't U.S. only, just that the beta testing currently concentrates on new users from the U.S. It is however possible to gain access - there are many guides online on how to do so.
The new app is a universal binary which also includes iPhone updates, so it might be worth downloading the update and seeing if it fixes any of your issues.
I would argue that this reputation only really applies within the tech echo chamber and that the vast majority of wider society isn't aware of this reputation, and has never heard of Square.
But these same people probably do have a PayPal account, and given that these onerous policies of PayPals are actually in place to protect the consumer I think they stand a good chance making it much more difficult for Square in this market.
You're right that a framework that should provide mobile compatible animations should have a website that is itself mobile-friendly.
However the page itself doesn't seem to use any of the frameworks it is promoting, and doesn't seem to do a lot of demonstrating as of yet. The full site is apparently coming soon though...