I have noticed and believe its okay to reference other stories that for contract reasons can not be posted like some of your stories.
Doc, The stories I had under contract restrictions are now all out of contract and I'm in the process of revising them and posting them here at SoL. It's always been OK with the SoL rules to reference the title of another story within a story or a blog, as long as it wasn't an outright advertisement to go buy that specific title elsewhere. Lazeez doesn't mind if you sell the story on another site and mention it at SoL, as long as the full story is available at SoL. Which is what I, and a few others, do. In my case I post the first chapter and wait until it's through the Wizard, and then post the other chapters for display at later dates - this is because posting the other chapters is a lot easier once the first one is in the system. That way SoL has the full story on their servers straight away. I also post the full story at Lulu for those who can't wait, they can buy it. Because SoL has the full story I'm not posting a teaser as part of a bait and switch activity, which Lazeez hates, and people who do it get banned.
Mind you, he doesn't seem to mind other sites etc being mentioned in the forum when people are looking for stories. But that's very different to having a part story on the main site.