Off topic rant, BUT I'm gonna... What is this? Why is it so much faster, and mobile friendly layout than either Twitter.com or their mobile app? And why does T

Off topic rant, BUT I'm gonna... What is this? Why is it so much faster, and mobile friendly layout than either Twitter.com or their mobile app? And why does Twitter.com spam me with an overlay telling me to use the mobile app before I can see a tweet? Why do they care so much about me using the mobile app that I get spammed everytime I click a twitter.com link, only on mobile?