Well, no secrets, guys, we have the agreement with the software company that develops the product, and this agreement is for a _limited_ timeframe only. That's why the software is only free for a limited period of time.
If you like the product we provide you for free, you might want to look at their other products, and buy their software. If you buy their software, you make software companies happy and they return to us with more giveaways, and, moreover, tell others about us, which means - new software titles for giveaways.
Yes, we make some money for us too, using ads on our web-site. We pay part of this income to software companies for software licenses (you get _licensed_ software at Giveawayoftheday) , though, because we value their efforts on making the software and we value legal software as well.