Microsoft Corp hasn’t given up on the Microsoft Network after all, and this week launched a multi-million dollar national advertising campaign for the network of internet services in the US. MSN now reaches 41.3% of all online users, 59% up from a year ago, the company said, and is attracting advertisers of its own including a $90m buy from First USA, and multimillion dollar buys from John Hancock Mutual Life Insurance Co and Unilever. The campaign began on Monday with print and online banner ads. Meanwhile, Microsoft named Looksmart Ltd as the primary provider of Web directory content for MSN. Microsoft recently licensed Alta Vista Search as its main search engine for the network (CI No 3,584).