This document discusses several Google products including Google Analytics Premium, DoubleClick by Google, Google AdWords, and Google Content Experiments. It notes some performance and scaling issues with these products, such as DoubleClick tags slowing page performance as more are added, AdWords officially only supporting one tag per page, and Content Experiments modifying the page head for each test. The document also covers concerns around synchronous calls negatively impacting performance and potential SLA troubles.
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