Just how much of your Web behavior is actually tracked by data aggregators? Well, Google and its affiliates alone track visitor identities on nearly two-thirds (64.4%) of worldwide Web browsing, according to a study by anti-tracking vendor Ghostery. Facebook trailed with trackers for a mere 28.8% of all page visits. Ghostery found 77.4% of pages had at least one tracker while more than 15% of pages had ten or more.

Here’s an alliance between data vendors. Time Inc.-owned Viant, which has an advertising audience database of 1.2 billion registered users, is adding information from retail data aggregator IRI. Marketers will get a clearer picture of advertising results at fine levels of detail, although not tied to identified individuals.

Databricks is highlighting its interest in marketers through out-of-the-box integrations with partners including Adobe, Braze, Salesforce, MessageGears, and Tealium. All will be able to run campaigns using information in the Databricks data intelligence platform without data syncing or copying.