Again, I think all it probably tells us, Carol, is that people can make mistakes when they're making up lists. I wouldn't look any deeper than that really.
But, as it happens, my font of all knowledge tells me that Invitation was in fact on the list, so that blows your theory a tad.
In fact, apparently you would be able to submit two stories as Fact Of The Matter from last year's list is apparently still 'outstanding', as well.
But again, I reiterate, there's no need to search for excuses not to submit. It's entirely voluntary whether you want your stories on the Archive or not. We won't come after you with a warrant, I swear.
LabRat
