Well this is frustrating. I previously nested tags with the Web edition, but the NEW AND IMPROVED version of Web doesn't include nested tags AT ALL. I come to support to learn how to nest tags in Android, and it also doesn't include it. C'mon Evernote! Basic functionality here. (I never use Windows or Mac, except as a last measure.)
Nested tags are apparently the way to organize in Evernote; so please give us the ability to nest tags!