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Every Thursday, we deploy a new version of BrowserID to all users transparently. The user experience continues to improve, browser support is expanding, and new features are added. As of this week, BrowserID remembers the email address you last used on a given web site. If you used your home email address on a shopping site, that address will be selected by default the next time you log into that shopping site. If you choose to use a single-purpose email address at another site, BrowserID will remember it and suggest that same email the next time you log into that web site, and only that web site. As always, you control when and how you log in. We’re just making it easier for you to present the same persona to a given web site over time.
Because we aim to protect your data, the correspondence of email addresses to web sites remains locally stored within your browser. We don’t synchronize it via the BrowserID servers. If you use BrowserID with multiple computers and browsers, that means BrowserID won’t remember your login preference from one browser to the next. Over time, if we can do it safely, we’ll look into ways of synchronizing these preferences across browsers.