Ken Kopin's remarks re the ease of checking disks were uncalled for.
I have, for example, the Fish collection (470 disks more or less) plus
other PD utilities I've collected over the years (610 of these) plus
multiple backups of my own work, plus backups and originals of most
every commercial package I own (i.e., all but a few games I couldn't
back up...I will do no more business with those firms.) Even if I could
move fast enough to do 6 to 10 disks a minute, sticking them into my
poor A1000's drive to let VirusX check them one at a time represents
a substantial time investment.
The bulk of these collections (yes, both of 'em) are generally
available (though my random stuff is available on magtape via DECUS;
I haven't time to copy hundreds of disks multiple times), and my material
is not particularly unusual in amount. Anyone who has been using Amiga
for a few years and had reasonable BBS access could accumulate far
larger collections. There's a LOT of PD and freely copyable material
out there for Amiga!