One of the rules in search engine optimization is to use permanent redirects to guide search engines from old URLs to new URLs, but Ask.com doesn’t observe them - or more precisely their implementation of them is completely wacked.

The URL you give out for your feed matters. Ideally you want people to subscribe to a URL that’s on your domain, yet you also want to use a service like FeedBurner to make your feed more powerful and track it’s usage. Now you can do both, but it requires a few server configuration tricks…

If your server is not properly configured to give a proper response for a robots.txt file your site will not be indexed by Google.