Microsoft’s Erik Jorgensen is corporate vice president for MSN , overseeing one of the largest online portals at a time when Facebook, Twitter and other social networks are competing aggressively for the time and attention of internet users. Jorgensen, also MSN’s chief media and technology officer, discussed the company’s current strategy for MSN — and plans for its future — in a recent interview. On MSN’s partnerships, such as its arrangement with BermanBraun Interactive on the “ Wonderw