Here are some authors who used to be active on Usenet (and for all I know still are); I have loads of stories by these folks.
Quixotoes (aka Ted) wrote dozens of stories, mostly M/f or F/f. He has a blog:
http://quixotoes.blogspot.com/Courtney (laserlynx@aol.com, courtenesca@aol.com) was a very prolific author, usually M/f, M/F, or F/f.
Mrspraycan (mrspraycan@aol.com) wrote quite a few stories; often short and humorous, and well-crafted.