Selling ads is Google's big money-maker, but the online-ad business is broadening away from Google's sweet spot, selling ads tied to the search-engine terms people use. Instead, advertisers want to target people based on more specific personal information such as hobbies, income, illnesses or circles of friends. (...) Few online companies have the potential to know as much about its users as Google. (...) Significantly, however, Google doesn't mix the separate pots of personal data. For instance, it doesn't use data gleaned from a person's Gmail account to target ads to that person elsewhere online.
Google's internal document suggests that this might change. Google could use data from properties like Gmail, Orkut and even search queries to improve ad targeting. Here's an extract from the document:
Over time, as the value of audience targeting is proven and the market reaction to these practices is realized, we will discuss the use of Search data. Google Search is the BEST source of user interests found on the Internet and would represent an immediate market differentiator with which no other player could compete. Search could be used to populate user interests. It can also be used to create new surround-search targeting options in which relevant display ads (or text ads) could be delivered on [Google Content Network] to a user within 15-60 minutes of a given search, whereby the timeliness of the ad would presumably increase its relevancy to the user.
It's important to note that the author of the memo is Aitan Weinberg, a former DoubleClick executive who is now a senior Google product manager for interest-based advertising. WSJ says that Google's executives were against using cookies to track people online, but the DoubleClick acquisition changed their perspective.
For the first time, Google had the ability to deliver ads targeted to individual people's computers. But just because it had the ability, Google didn't start using it. There was still too much internal resistance. (...) Tensions erupted during a meeting with about a dozen executives at Google's Mountain View, Calif., headquarters about 18 months ago when Messrs. Page and Brin shouted at each other over how aggressively Google should move into targeting, according to a person who had knowledge of the meeting. (...) Mr. Brin was more reluctant than Mr. Page, this person said. Eventually, he acquiesced and plans for Google to sell ads targeted to people's interests went ahead.
Despite the internal resistance, it's tempting to cross-correlate data about users. Showing contextual ads in Gmail seemed creepy at first, but the ads turned out to be quite useful.
{ via Google Blogoscoped }