To quote an email from a user: On Mon, Sep 27, 2010 at 10:09 AM, Eric Wong <optimalcycling@gmail.com> wrote: With the way Chromium/Google Chrome stores localStorage areas for each subdomain/website as individual separate file on a user's hard drive, this could lead to a very large number of files and performance degradation as more websites use localStorage. This is probably something we should consider looking at, at some point.