Vultural said:
I am a big user of Emule, which many also assume is dead.
Both Usenet and Emule are off radar, to me a very good thing.
Bluto, could you talk a little about “retention”?
I was a free user of Usenet back when Mysterbin was around, but retention limits finally pushed me towards Email and private tracker torrent groups.

The retention of Usenet news servers these days seems to be around 8 to 10 years. (For those who aren’t familiar with Usenet, “retention” in this context just refers to the length of time a collection of files is stored on the server before being deleted to make room for newer content.)

It may well be more than this; the better servers might look to see which older files are still be downloaded regularly and preserve these longer. Besides, after 10 years or so, many uploads will be obsolete having been replaced by newer and better versions.