I've only watched maybe 10 because with my connection it takes hours or days to download one. I enjoy hearing accents: English, Scottish, Indian, southern, Russian, German, Canadian, Baltic, whatever. But so far all I've hit is background noise and moaning.
Whether it's dirty or descriptive talk or not it's one sense that's starving, another aspect of making the production erotic that's missing and it doesn't seem hard to do.
I've watched a lot of 80s porn and loved listening to Kay Parker (Canadian) and Lisa DeLeeuw (Texan) as well as watching them.
It's real easy to sound stupid, or sound like a non-acting porn star("Oh baby" "Munch that man meat" or the classic "Is that the cat's nose I feel? "). or to distract from the video itself.
I have to admit I have dabbled in at least all three of the mentioned.
I can also say my favorite all time video has some Mel Brooks quotes in it, a coffee table that looked a lot more sturdy that it was, a ficus tree that was just plain unlucky, and a resounding bellow of "What the fuck?" at the end.
Yes. I found the cat.