Edit content inline, without going to the admin area.
Make sure your host is running PHP 5. The only foolproof way to do this is to add this line to wp-config.php (after the opening
No, because TinyMCE is anything but tiny and would take a long time to load.
Also because I couldn't get it to work.
To avoid problems with WP Super Cache or W3 Total Cache, I recommend disabling caching for logged-in users.