To enter into the WD World Backup Day Photo Mosaic Sweepstakes (this “Sweepstakes”), go to to submit your entry. No purchase is necessary to submit your entry. A purchase will not increase your chance of winning. All entries must be received between 12:01 a.m. Eastern Daylight Time on March 30, 2012, and 11:59 p.m. Eastern Daylight Time on June 8, 2012. All Entries become the property of Western Digital and will not be returned. Participants may submit one (1) entry per day during the promotion period, but only one entry per participant shall be eligible for either the grand prize drawing, any weekly prize drawing, or to receive a T-shirt.