You can now leave video comments on ReadBurner items!  This was made possible because Disqus added the feature, through a partnership with Seesmic.

This is one reason I love Disqus - versus other video commenting systems that would require us to install a plugin, I simply logged into our Disqus account and clicked a checkbox.  Thus, our developers are able to relax a bit following our big Netvibes push yesterday, yet we will get a new feature

I wrote a bit more about the Disqus/Seesmic deal on Mashable.