Pure Slush is now fully operational at its new site. You can find it here: https://pureslush.com/
You can still find them at their old website, but there is not much there of current relevance. Stories, poems and essays previously published online, from 2010 to 2017, however, are still available through the All Stories page.
If you find some links on the new site are not working, please let them know at firstname.lastname@example.org, and they will endeavour to fix them.
the Pure Slush team