This plugin automatically and periodically saves the "just typed comment" for visitors so no data will be lost even the browser crashed.
=Does this plugin require MySQL to run in the server side? (site owner)= No, as the plugin name suggested, it uses browser's local storage system. So just drop this plugin into plugins directory then all good.
=Does this plugin require cutting edge HTML5 supported browsers to run in the client side? = No, not really. This plugin supports most mainstream browsers such as IE8+, Firefox3+, Safari 3+ so most of your visitors will be looked after.
Please drop us a line at firstname.lastname@example.org