> Ah, shame! That destroys the symmetry I was exploiting and so requires two lots of not quite identical code :(

Oh, but it's _beautiful_ in terms of function. :) I'm not going to put it up on my wall, but I'll certainly keep it around in my "nifty and useful Perl stuff" folder; I'm sure it'll come in handy in the future. Heck, I'm about to use it right now to sort a bunch of domains for "whois" queries - .orgs need a 20-second delay between checks (otherwise they get rate-limited), so I'm going to "spread" the .orgs among all the other types and reduce the wait. Thanks again!