Do you know what led Mozilla to stop this experiment (I'm assuming spam)? Will this not be an issue for your instances as well?
Quick summary: it was being used for malware and phishing, aggravated by the trustworthy-seeming firefox.com URL.
So, yes, incredibly naive.
I can imagine spam being a problem with such a service with a well recognized brand name.
I don’t know. The internet had hundreds of file sharing sites at one point. They all suffered fates similar to the epic MegaUpload although with not as colorful founders as Kim DotCom.
I don’t see how having them again would be different than last time?
Well it doesn't matter as much in this case because "Send" is a temporary file host.