If you read the terms and conditions it states this is an information gathering sweepstakes.
I shop at both HSN and QVC. I also shop elsewhere online at places of my choosing. I do not need my information sold to hundreds of other vendors to start bugging me with nusance emails.
Just FYI for those that did not read all the fine print. 
Your information will be everywhere, and odds of winning are like playing the lottery. A long shot.