Only time I've encountered it was on a virus.

We definitely don't need more opaque systems breaking the "everything is a file" philosophy.

This.. sucks. ADS needlessly complicates things and ruins the file structure. If it has a legitimate purpose, I've not heard of it. I played around with it in my early programming days and thought it was neat, but really just a parlor trick. Viruses sure use it though.

I hope ADS will always be opt-in by requiring that mounting flag..