I don't think ICANN should retire a domain namespace just because a political entity that it used to represent no longer exists. Cool URIs don't change [1].
> Among the institutions still using this domain is the Russian pro-Vladimir Putin youth movement Nashi, as well as by the pro-Russian armed insurgency in Eastern Ukraine. Some organizations with roots in the former Soviet Union also still use this TLD.
> The domain has been reported to host many cybercrime activities due to the lax, outdated terms of use, and staying out of focus (2% usage comparing to the primary .ru zone).
You click the "submit" link at the top of the page. Then enter the URL you want to submit. It will then appear in the list you can see under the "new" link.
If people find it interesting, they can then upvote it by clicking the little up arrow beside the submitted link. If enough people do that, then it will end up on the front page. And that's all there is to it!
That was quite courteous way to perceive the question and respond. I can do one better:
The link is to a Wikipedia page with a long url. You can submit a title to mask the link. The op posted ".SU" and so .su isn't a link, it's just a title.
Compare to the .cs TLD for Czechoslovakia which was phased out and replaced with new TLDs.