For most companies, Twitter provides a place for self-promotion, a vehicle for customer engagement. For Sears, Twitter often spotlights the company's failure. Not the standard somebody erred in judgment and tweeted something offensive failure, but the organization-wide attitudinal and operational failure that defines Sears. Over the weekend, I was in Toronto. While on Yonge Street by the Eaton Centre, I snapped pictures of the Sears store that, at one time, anchored this mall. Now the store's empty, leaving a hole in the heart of Toronto, literally and figuratively.