I have created a small userscript for Codeforces, which sorts comments by comment rating. As a result, the comment tree is sorted just like in Reddit. So the
most useful comments funniest jokes will always be at the top.
You can add it to Firefox with Greasemonkey, or to Chrome with Tampermonkey. Or to any browser with corresponding addon — I hope any modern browser supports userscripts in some way.
Here it is: Codeforces comment sorter.