I have to admit, I write a lot on the fly. I'm a bit impatient, so I don't always remember to get a beta reader. I'm also rather prolific, which is why certain kinds of fic got spun off to estorise. I'm not always sure of the quality of the unbeta'd stuff.
I sometimes go back and rewrite things. There's a post a few pages back in
estorise that I'm fiddling with, because one of the OCs went a bit OOC. (I always have a difficult time writing Kiyoe and Ramon in the same scene; Kiyoe is sensibly hurt and scared by Ramon, and Ramon isn't getting why Kiyoe has a problem.) I won't link it here because it's the sequel to "One's Place", where I do have the second half written and sitting on IJ, but will probably need revising at least minorly.
I wrote a fic yesterday called "Closer Call", which has a NSFW bit or two. This morning I looked at it and while I didn't precisely rewrite it, certain bits needed fleshing out. Badly. So I did another draft before work.
( And speaking of NSFW.... )