this works really well, but I found that (at least under mac os x) I had to change the following:
# Download the image and save it to disk.
my $req = HTTP::Request->new(GET => "http://$imgurl");
to
# Download the image and save it to disk.
my $req = HTTP::Request->new(GET => $imgurl);
as the original version would just try to fetch "." and puke out.
I don't know if that's due to what's on the mac, or no, but at least for me $imgurl already passes "http://link.to.image/image.jpg".
so, just make that tiny change if you're running into problems fetching stuff.
a very nifty app, very fun to max out your CPU fetching an ungodly number of images!
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