You are actually chastising your loyal readers for taking the time to post their thoughts? And then you are DELETING their comments??? You're not talking about spam, right? Actual users' comments?
Cripes, mate. The so called bandwidth usage for even a 2,000 word comment is negligible. I suggest you eat the "marginal costs" and be a bit kinder to your visitors, lest you lose them for good.
Note that I never leave comments more than a few hundred words long on your blog. I hope this is permissible.
Yes, I am talking about spam. It's posted by actual people, not robots, but it's spam nonetheless. And I'm not going to have people's Comment Experiences ruined because someone posted 5,000 words on something completely irrelevant (e.g. their manifesto on the strategic importance of magnesium).
For that matter, I'm not going to have MY blogging experience diminished because someone decided to use my site as a billboard. It's one thing to respond to something I've written or something other people say in the comments (and, obviously, I like it when people do respond to those things). But someone writing an amazingly long essay on something like -- I dunno -- why such-and-such a firm screwed the person over ... that just ticks me off. They can get their own blogs, but they ought not hijack mine.
Ben -- MT-Blacklist. Look into it -- seriously.
Hi Geoff -- I actually have blacklist and it works perfectly for comment spam. I'm talking about actual people who post these long crazy essays -- like 3,000 words long -- on what have you. I can't detect that 'til it happens!