> So much for User Agent.

User agent has been abused for so long, I forget a time when it wasn't.

Anyone else remember having to fake being a Windows machine so that YouTube/Netflix would serve you content better than standard def, or banking portals that blocked you if your agent didn't say you were Internet Explorer?

I mean forget that, all modern desktop browsers (at least) start with the string 'Mozilla/5.0', still, in a world where Chrome is so dominant.