We'd like to solicit your assistance with making our site as robust as possible. If you notice that an SDI email or a page in the SDI archive is not displaying as expected, please post a comment here. Likewise, if you were expecting to receive an SDI email and you didn't, please post a comment here. We'd like to help you debug the issue. Also, if you have any comments or suggestions in regards to the SDI emails or the SDI archive, please post your thoughts here - we're open minded and would like to continue to make improvements to the site. Thank you for your assistance, Robert