I just had a quick skim through the flickr.pl script and it looks like it's sending a DCE message for every picture it downloads (as far as I can make out, didn't look that closely):
## Don't send the messages too fast
sleep 1;
print `date`;
print TEST "1. Sending /usr/pluto/bin/MessageSend dcerouter -targetType
template -r -o 0 2 1 819 13 $symdest\n";
$fms = qx | /usr/pluto/bin/MessageSend dcerouter -targetType template -r
-o 0 2 1 819 13 "$symdest" |;
And it looks like all these are logged in: /var/log/pluto/Flickr.log