You raise a good question about getting permission from WOTC.  I assumed since there are two other apps that do similar things that adding a third to iTunes would be no problem.  I didn’t ask for WOTC’s permission first, however, I just sent off an email to WOTC’s press handler to see if there is any issue so we’ll see what comes back.  I’d hate to have to pull it with all the work I put into it, but if asked to do so, I will.  If that happens I imagine the other two apps will have to be pulled as well.