Is HTML5 Web Storage cleared when the browser clears its cache? If it does, many people like me may lose data if they accidentally clear cache? or like in this comment …
Since HTML5 local storage is kept separate from js cookies (like Silverlight, Gears, Flash), it opens up a world of 3rd party privacy issues for HTML5 as these objects will likely NOT get deleted with a clear cache or delete temporary data
… where web storage is not cleared, but leads to privacy issues?
To quote the Mozilla Developer Center:
Note that Flash cookies, OTOH, are quite a bit harder to remove.