I'm sure they'd also not like for people to use lynx, which doesn't display adds. I'm sure they'd like for people not to use junkbuster or other ad-blocking proxies. I'm sure they'd like for people to mail them large envelopes full of cash.

But they've put up their content on a publicly accessable web site. They're perfectly welcome (as are you) to implement whatever technological means to restrict access (of course most of those won't stop a truly determined person with the right know-how, but that's another issue :). But I see little reason to ask for permission to provide an URL which any webmonkey worth his bananas could deduce in under a minute with just a browser's `View Source' functionality. That URL does not magically give you any more access to their content than the form on their front page, just more convinient access.

But this is getting off topic from the original question at hand.

response to 1st paragraph:
I'll engage in a honest, no flames, "is blocking ads morally acceptable" anytime, but perlmonks is probably not the place.

2nd paragraph
The permission I mentioned was for use of the content, not for giving technical specs. I'm sorry if I didn't make myself clear. This is the same warning that comes(?) with Finance::Quote modules.