"Google really needs to" in the sense that it would be useful, or that it would be a good investment for them? Sure it can afford to do it, but how would it help them make more money?
> Sure it can afford to do it, but how would it help them make more money?
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It keeps the power users on the site so they wont have to look for an alternative. Power users if they find something better might influence no power users to the other site
