Here is what turns me off instantly:
When the videos says 'Lesbian' but there's a male in it. It no longer is 'lesbian' but now a 'threesome' Get the titles right!
When the video starts off in the middle of fucking. I want to see them undress first, as this just adds to the video. Going from 0 to having sex is a turn off when watching.
Too much emphasis on the female ass. I'm a frontal person.
Videos that are less then 10 minutes long. I mean..seriously. A short 3 minute video isn't enough.
Japanese porn - why do the girls sound like they are being killed??
Japanese Porn - Why the censoring? That's bloody annoying
Fake breasts annoy me. I like natural breasts.
Also, really obvious fake and scripted videos. The amateur ones are better, there's actual emotion involved.
Gay porn - enough said
Camera clicking.
When it's an 'exhibition' type of video and it's clearly obvious that the place is rented out. It becomes moot at that point.
Voice overs annoy me.
NOT being able to skip to the good parts of the video. I hate all of the useless talking, so if I am forced to watch it out, I go onto the next video.
Seeing ads for porn sites - If I'm not there already, what makes you think I'll join up? I can see similar stuff for free.
Violent sex - WTF??
Anything having to do with scat. I mean..who in the hell finds -shit- a turn on?