Microsoft has revealed the pressure from Apple on PC market share with a newly posted Canadian page trying to steer buyers away from desktop and notebook Macs. The "Do the Math" site tries to play on stereotypes of Macs always costing more by showing Windows 7 PCs that are supposedly either cheaper or offer more features for a comparable price. Some comparisons are valid, though the comparisons ignore like real-world battery life, where Apple usually comes out on top, and the greatly reduced need to use security software.