swbuehler on "How do I remove self-hosted blogs from my "My Blogs" list?"

I have about a half-dozen old blogs in the "My Blogs" list on my profile that are no longer active and long gone. How do I remove them from my "My Blogs" list? I also need the URL of my main blog changed in my profile because it goes to the wrong place.
Blog url: http://shatteringyoursmallcosmos.com/