I received a comment spam like I do every now and then, but this one was weird...

It actually had the attribute, nofollow, appended to the link.

Here is the exact comment added to Google Personalized Home Page Adds Expand & Collapse Per Post:

Very nice. <a href="http://www.aesistech.com" rel="nofollow">Aesis</a>

That is the first time I have seen that...

More details on what is the nofollow attribute here.