Now that we have Private Messages, I’m wondering whether the mods and admins prefer to be contacted that way, or by email.
I think the preference is probably still e-mail. Believe it or not, the mods do have lives, or at least a fair facsimile of one, and they’re not always on the board (and thus wouldn’t notice that they have a PM). But most of them are on a computer doing something or another fairly often, and so will get an e-mail. So if you need to get a mod’s attention quickly, e-mail (ideally to several at once) is probably the best way to do it. And reporting a post is probably the quickest way to e-mail them.
But of course, IANAMAM.
What he said.
It’s easier to catch emails than PMs.
Mods have lives? 
I thought they signed an lifetime indenture contract!
I don’t care; either way works. I am not yet, though, in the habit of checking for new private messages, and it might be days before I noticed it.
I thought the preferred method of contact was still an express package filled with chocolate and beer.
Well, nobody wants to pay for sending a hooker in an express package.
They keep forgetting to put air holes in the boxes.
A header of “your Worship” always gets my attention.
And I don’t want a hooker, anyway. Chocolate and/or beer, on the other hand…
Ok, so chocolate and beer on the other hand, but what do you want for the other hand?
Well, I can’t have chocolate.
Wanna trade?
A kittycat. And a book in the gripping hand.
I’m always amiable to more chocolate. You poor thing, you.
I’ll just sit in the dark and sob quietly.
With my two hookers.
I think they charge extra for that.