The point of a promotion is to promote something.
Promotions are for the benefit of eBay not the seller-- or even the buyer.
We had a lot of free listings this summer to promote the switch from dual currency to all Canadian dollar listings-- up to 50,000 free listings at one point, as I recall.
I suspect that we may see another promo for 'giftable' Christmas items sometime this month. It may simply be a question of changing the category on some of your items (from Crafts to Collectibles for example).