1: Stacy's Senior Year by Parker Classic. Evil. Parker. If you want to know what inspired me to write the kinds of things I do, this is a good place to start. There's only one of Parker's stories here on SOL, but it's worth seeking others out. Look on the ASSTR Hall of Fame, and Parker's entry there has a link to some of the ones on the A.S.S newsgroups. Find one named "Sisters" - which I absolutely love.
2: Dunes by Deirdre This is another author who doesn't have all her stories here on SOL, so I didn't go through them looking for my actual favorites. I picked this one for its overall flavor, not its MM content particularly. Deirdre played beautifully with these kinds of themes; reluctance, control, various levels of consent. Seek her out elsewhere... it's a pretty limited assortment here on SOL. Her influence stretches to many authors of online erotica, whether the authors know it or not.
3: Mother's Little Helper / Her Mother's Daughter by rache I guess I'm picking authors more than stories. In this case, I'm almost picking more than one author... Rache writes under several names for various kinks and moods. "Mother's Little Helper" suits me fine. A beautifully paced descent of the protagonist - betrayed by her own self-destructive impulses. A little bit of a knife twist towards the end (of the second part). On a side-note, there's a certain element of this story that is a personal squick for me. It's a compliment to the author that I read through my discomfort, because the handling was intelligent and entertaining.
4: Babysitters Worth by cowgirl I love cowgirl because she's so very different, and that's a good thing. I point towards Babysitter's Worth not because it's her best. In fact, just ride the link over to her directory, and explore it for yourself. cowgirl is all about humiliation. It's mainly ff stuff, sometimes she plays with mind control, but mostly it's just an unexplained compulsion that forces her girls into their predicaments. Look past the grammar, spelling, etc. that you'll find a bit raw in her stories. That's how she is. Raw. Emotional. Gut wrenching. Enjoy!
5: Trust by E. Z. Riter I always love a good cuckold story, and this one takes a special bend that I enjoyed very much. Smart author, and more emotionally complex than I can usually manage. Check his stuff out.
6: Blowing Betty by Couture I've had a couple of readers recommend Couture's stories to me, as I've always enjoyed a good dose of humiliation with my sex fiction. Couture didn't disappoint.