In the Re-Tail thread, I barely ever see giveaways. But then, when one person makes one, there's like, 7 in a day! Then it dies back down... Have you seen this?
I haven't noticed since I don't browse Retail too often but I know for a fact that I get motivated to do giveaways when I see other people doing giveaways.
i havent been to retail for a long time but i can guess why. maybe the items you're giving away just dont interest a lot of people compared to other giveaways which contain more interesting items.