As I said, I haven't hidden them from anyone (And even posted links on the official forum FanFic section.), and no issues have been brought up.
You might want to replace the first part with: "Shadowrun is a registered trademark of The Topps Company, Inc. All Rights Reserved." (Copied from the Shadowrun Official Website). I posted those stories a few years ago, before they were bought out.
I doubt that the officials have time to check out FanFic, myself (I might be wrong.), but, typically, as long as you don't claim the IP as your own, and state that you're not trying to steal it... Well, free advertising. Be a major dick move to piss off your fans after all, but we're talking about Corporations, and
look at what Sony did with their Music Root Kit.
Again, I'd advise waiting for some kind of official statement. Or, if you feel safe with what I did, go right ahead and post up.