They will be unpinned, I reckon. They'll be turned into normal threads and will live or die as long as they must. I don't really want them to turn into generals though.
I wanted to choose at least two games so that if somebody doesn't want or can't play one game because of time, platform issues etc, they can choose the other one. Or play both, if they have enough time. It would also be better for games of shorter lengths. But perhaps it'd be wiser to start with one and add another at a later date, if it does well.
And yes, I'm gonna try to advertise whenever I can, and I'm counting on some friends to spread it around too. I'll also try to ask the admins of other boards to link to it.
I really hope it all works out, I want a place like this and I think a text/imageboard is the right way to do it.