It’s baaaaaack! Barely two months after Circuit City, a long standing icon in the world of consumer electronics, shut its doors for goods, the doors are back open…online, anyway. After the bankrupt company was forced to liquidate everything, Systemax — the same company responsible for sites such as TigerDirect.com and the revival of CompUSA — managed to purchase Circuit City’s Internet domain names and trademarks for around $6.5 million.Since making the purchase, it has re-created a Circuit City website