alriyadh.com usability improvements

alriyadh.com added multiple usability improvements to comment posting form:

• To prevent duplicate posting, the submit button is disabled after the first click.
• The user name and email is now remembered, so next time it will be auto filled.
• Focus is set to the first empty field in the form.
• Client IP is now recorded to detect fake posting, some users sends multiple posts with different, this will help to detect them.