I think this is a great idea. It provides an outlet for people to promote their work so they don't get tempted to try to do it on the main page and earn a bunch of downvotes and spam-flags for self-promotion (not that much of a problem, but it happens occasionally). I also find it interesting to see what the other members of the community work on.
But I, for one, did not even notice this until it was over. I guess I am not the only one, considering that it only received 3 entries (one of them self-deleted by the author for reasons they kept to themselves). So advertising this better might help.
Although I would not have participated anyway that month, because I couldn't think of anything I did during that timeframe which would be worth showing off. I am a hobbyist game developer and I am currently "between projects".