I was trying to register my blog with Technorati, but having a problem with the Feed URL. If you go to my blog's homepage and click the Subscribe to RSS Feed button it takes you here:
But when you enter that into the Feed URL field in Technorati's page, it comes back with an error saying that the feed URL should begin with http://
I found a workaround: To burn a feed from a Sandvox blog using Feedburner, go to Feedburner and burn the feed using the URL of the blog, not the feed (it accepts both.) This was something I needed to do anyway. Next, I gave Technorati the burned feed URL and it took it.