Based on a current widely advertised promotion, I completed an online request for an estimate. Within 5 mins of completing the form (names, addresses, phone numbers) I received 4 calls from various window companies basically demanding to come out and give us an estimate. Now, 15 hours later, I have received more than 8 calls. Their website does NOT say or warn that they sell or share your personal information. What a joke. I've called and asked them to remove my information and to explain they do not have my permission to share. The woman I spoke with was very sympathetic but didn't seem to know what the company's practice is or what to do about it; other than they'll take me of the list. Stay clear of online estimate requests to Window Concepts of Minnesota. User's recommendation: Shifty.