it was suggested as a resource for posting tunes at a guitarists forum i frequent.
the site owner states
"This free service is available for anyone to upload original works only. No copyrighted material or covers of copyrighted material. This means that if you didn't write the song, please do NOT upload it, or it will be removed."
so can't pre-guess his stance on "Trad/Arr" or how long-term this option could be.
but here it is anyway if anyone cares to try it to add quick posts of tunes to their threads..