Feedster.com seems to be very buggy. I have not been able to view the cached pages or create alerts. Few other features fail to work as well and the most common reason cited on its pages is a

Unable to Find Requested Page
We recently revised our website and can't find the page you tried to go to. We're sorry. Really.

or a,

We're sorry but a serious error has occurred. This problem has been emailed directly to engineering and should be addressed shortly.

Folks @ Feedster, could you fix them please?