Can we post bugs here? Ok, I will...
Create a post, and use quotes in the title, something like:
HTML "Error" eh?
Save the post.
Go to the home page of your WordPress.com blog, and attempt to validate the markup.
It won't. This is what was output:
<a href="http://raster.wordpress.com/2006/03/02/html-error-eh/#comments" title="Comment on HTML "Error" eh?">[3] Comments</a>
It should be like so:
<a href="http://raster.wordpress.com/2006/03/02/html-error-eh/#comments" title="Comment on HTML “Error” eh?">[3] Comments</a>
Which is what happens on the individual post page, but not on the home page.
Thanks!