So there's this site Literotica that's a pretty huge repository of free, somewhat sorted filthy stories and, in that way, a great wanking resource. (Protip: they give out that little "honors" icon for anything sort of resembling English. Your browsing will go faster if you pretend the non-honors ones are invisible.)
But you have to be careful, because many of the stories are boobytrapped. You'll be going along enjoying the story and then...
"...Then Jane's mom walked into the room."
Oh no no no. I know where this is going. It's the second largest category on Literotica after their catchall "general sex" one and I don't know why. Close that one. Pick another.
"...Then Jane said 'I want you to taste me, lover,' and squatted over John's face and started to squeeze out..."
OH GOD. Close it. Try again.
"i love my Master so much He is the only One who knows what is right for me and i spend all day worshipping at His feet and i only breathe at His command and there is no actual sex in this story just so much deliriously capitalized F/fawning."
Well, whatever floats your boat, honey, but I can't wank to it.
"Then he started to fuck my pussy! Oh my god! It was so exciting! It was like the sexiest thing ever!"
Like, OMG, sex! OMG!
"then he fuked huer in teh pusy and tehn the as and it ws sexy cus shw was a re\l hrny biatc"
Sometimes these have "honors" marks. It's unsettling. And possibly randomly generated by machine.
I should write my own Literotica stories if I have such high fancy-pants standards, I suppose. Maybe I will. It's kind of discouraging adding your story to a pile 50,000 deep in mompoopsex, but I don't really know of any other major, free, web 2.0-y, topic-sorted Internet sex story venues. I'd appreciate any recommendations.