"Additionally, the study revealed that 87 percent of email IDs, user names, and passwords gathered from various sources were still active." That is a pretty st

"Additionally, the study revealed that 87 percent of email IDs, user names, and passwords gathered from various sources were still active." That is a pretty strong case of using an OAuth account that can show you everything that is authorized. I have no idea how many old "jaxn" accounts from the Web2.0 phase are active and forgotten. I would imagine that 75% figure is pretty close to the percentage of people who use the same password for pretty much everything. I would also imagine that at least 75% of HNers are in the other 25%.