Set Default Editor
Do you prefer to use the HTML editor rather than the Visual Editor when writing posts? Make either of these options your default by adding either of the following lines to your functions.php file:
# Visual Editor as default
add_filter( 'wp_default_editor', create_function('', 'return "tinymce";') );
# HTML Editor as default
add_filter( 'wp_default_editor', create_function('', 'return "html";') );