We’re experiencing some problems with TypePad’s spam filter. A number of us who are trying to post comments are getting the following message: "We’re sorry, your comment has not been published because TypePad’s antispam filter has flagged it as potential comment spam." If you get this message, DO NOT keep on trying to post the same comment. Please post comments only once. Your comment will appear in our spam folder, and I will be checking the Spam Folder regularly and manually overriding the spam filter where appropriate. Supposedly, by doing this, the spam filter will learn to recognize legitimate comments. If it’s taking too long for your comment to appear, then email me at douglas dot portmore at symbol asu dot edu.