This idea was posted some time ago, maybe in our forums ( http://forums.osclass.org/ ) I can't remember well.
At that moment I sent an email to the developers of Artisteer and offer our help. I did not heard back from them.
We're open to collaborate not only with Artisteer, but with anyone who wants to and we could both profit from it. So maybe you have to talk with the Artisteer staff and convince them to include Osclass in its software offer.
Why allow reposting? Why not let ads to never expire in first place?
Not sure what do you mean with this