Kara Swisher reports that Google and Microsoft’re in "advanced talks" with Twitter over data mining deals to allow search companies to index information now flowing through Twitter. One possible structure to the deal could result in one of the tech titans paying "several million dollars" to the social media startup, while another consists of a revenue share agreement. “But doing these kinds of data deals with big search players does make a lot of sense, since it would be hard for Twitter to turbocharge its own search engine without running into the big cash-laden guns at both Google and Microsoft, which recently launched its new Bing search service. Twitter is, instead, seeking to create a large open platform, which many could plug into, from search engines to marketers to publishers to developers. Twitter has also been considering offering premium services to these groups and is contemplating some form of advertising offering,” Swisher writes.