Analysis of information sources in references of the Wikipedia article "Local shared object" in English language version.
Integration with browser privacy controls for managing local storage – Users will have a simpler way to clear local storage from the browser settings interface – similar to how users clear their browser cookies today.
Representatives from several key companies, including Adobe, Mozilla and Google have been working together to define a new browser API (NPAPI ClearSiteData) for clearing local data, which was approved for implementation on January 5th, 2011. Any browser that implements the API will be able to clear local storage for any plugin that also implements the API.
The ability to clear local storage from the browser extends the work we did in Flash Player 10.1, which launched with a new private browsing feature integrated with the private browsing mode in major browsers, including Google Chrome, Mozilla's Firefox, Microsoft's Internet Explorer, and Apple's Safari.
Kongregate discussion about users losing data as a result of the new browser behavior.
Mozilla support question and follow-ups: How do I stop "delete cookies" from deleting saved games of a flash based game?
Change to the "on close" firefox behavior to use the new NPAPI ClearSiteData API.
Change to the "clear recent history" firefox behavior to use the new NPAPI ClearSiteData API.
Loss of data on upgrade bug report, feature request for treating HTTP Cookies and Flash Local Shared Objects differently.
Third party patch to revert the firefox cookie semantic change