Dazed and Confused said:
its a big improvement, but frankly I still don't understand why sizing should be a problem on the web's biggest professional cycling site in 2015. I view bandwidth, computer power and storage as commodities these days.
Because it's mainly about other users, not the site itself. It wouldn't be a problem from a technical standpoint to allow you to upload enormous images and just let the site resize them on the page. But that's going to start slowing down page load times. If we don't try and encourage images to keep within reasonable dimensions, there'll be a performance impact for someone viewing threads with lots of massive, high-res images (especially on mobile).
The other side of the coin is that if the 3000x3000px image you're trying to embed is just going to be resized to 1200x1000px anyway, what is the benefit of being able to include them so large?