Hi, this page leads to nowhere:
So it’s not possible to use Memex with Firefox, at least for new users.
I first discovered Memex at work where I can only use Firefox. Couldn’t make it work. Then started using it at home with Chrome, great. Now went back to check Firefox, still broken link.
Or maybe Firefox is not supported at the moment? In this case the Memex homepage is confusing for new users.