Microsoft wants to pay $44 billion - perhaps the largest technology purchase ever - to buy Yahoo! Why? To compete with Google! But does it make sense? Well, from a big-picture point of view, anything that can thwart Google’s dominance of Internet search and advertising probably makes sense for Microsoft, and if they’ve got the cash, there are worse places to spend it. But does this make for an attractive investment opportunity? Do you want to own a piece of Microsoft/Yahoo!, recognizing that the Microsoft part is eight times the size of the Yahoo! part?