Comment by dpkirchner

Mobile IMDB is not the best example -- simply navigating backwards causes a page reload, or at least a long stall and jitter as the page scrolls you around. I'd prefer an app experience (however I just use the Letterboxd app instead.)

Tabs are a big win for mobile web, I agree. I just don't think it outweighs the annoyance of navigating the app in more traditional ways.