SHN = proprietary format which will cost vendors money to add to their players.
FLAC =
FREE Lossless Audio Codec = No expense for vendors to add it to their players.
FLAC has tags and built in checksums, the arguments are long and many but there is a clear winner for new material. I don't see any reason for people to keep making SHNs other than their lack of motivation to get with something that is new (to them. FLAC has been around for a while, now.)
Anything that I produce is in FLAC. I re-encode
every shn that I get but I do keep the original md5 information in the .txt file and note any alterations (SBE fixes, generally,) as well.
Now, specific to the topic: Would I up my re-encoded FLAC to
archive.org? Doubtful. I'll leave that to the original seeder. If the original is not forthcoming and all that, I'd consider it.