Stanford study: 61 percent of largest websites share usernames, user IDs with third parties. Researchers looked at 185 of the largest websites and found 61 percent shared information. Many websites appear to not inform users of the personal information they’re sharing, the study says. The Information Technology and Innovation Foundation questioned the study’s assertion that it debunked the myth that digital data collection is anonymous. The report merely identified some known technical issues that websites can address to improve privacy, a tech-focused think tank says.”]