I copied the widget and placed on the Sidebar of my site. It worked BUT when validating with W3C it raised too many errors. In contrast when I placed the widget in the page, it worked flawlessly. (This behavior is common with other widgets too from ezine, bukisa etc.)
It is a very technical question. Few people, outside of staff, are qualified to answer it. I think you should bring it to their attention, let them see if they can replicate it. Include a link to this forum thread.
I just checked out my SEO Tutorial hub in the w3 validator tool, and it has 35 coding errors and 17 warnings. This is particularly embarrassing because in that particular hub I discuss the importance of clean,...