(I downloaded it from the french page, I imagine this changes nothing ?)
Well, please pay attention with products that do some communication, either on Internet or with a peripheral : with some firewalls (I have the example of Online Armor), it is mandatory to dis-activate the firewall during the installation, and to restart the machine before reactivating the firewall -otherwise Windows crashes.
As giveawayoftheday needs a connection at the beginning of the installation to verify the offer still applies, you have to be very clear about what is the good moment to disconnect from the network, and dis-activate the firewall -and also to avoid requesting the user to reconnect to Internet before he restarts his machine.
This could sound as some sort of suggestion for giveawayoftheday.com.
Apart from this, I have to add that Webcam Morpher Pro needs administrator rights on the machine to record the license number, and that user by user. If you record it as a limited user (which you generally speaking are supposed to be when connecting to Internet -please read Microsoft's monthly security bulletins), Webcam Morpher Pro does not tell you that you miss some rights on your machine, but that the license number they gave you is wrong, which is somewhat unsettling. So, I could record the license number for my administrator, and for him only. I did not test that yet, but I presume I have to change the status of each user to administrator during the time he records the license number. Could be more simple.