Templates: Is comment author blog admin? An easy test

If you make Blogger templates or template based hacks, this info might interest you. In the comments section, usually in <b:includable id='comments' var='post'>, if one needs to check if the comment author is blog admin, often seen solutions include:

<b:if cond='data:comment.author == &quot;PUT_USERNAME_HERE&quot;'>

and

<b:if cond='data:comment.authorUrl == &quot;http://www.blogger.com/profile/01234CHANGETHIS56789&quot;'>

But the easiest way, and least error prone, is:

<b:if cond='data:comment.authorClass == &quot;blog-author&quot;'>

After realising this, I updated my How to Hightlight author comments in Blogger hack to use this easier method.