It could be useful, I don't think it fits under the sections it is posted under nowadays so it's not a bad idea. Could make it a section with game deals where someone informs about good games that have a discount on top of the giveways.
I doubt the section will really be very popular but that could be good anyway, the question really is whether it's really worth creating a section only for that seeing how little giveaways there are and the fact that no one really advertises game deals at the moment.