The iOS5 Notification Center RSSWidget by iDevHaice is awesome ! I love it ! I just hope it gets an update in which we can add more than one Feed ! Anywho, I will be showing you how to edit and replace included feed to your own

Browse to :

/System/Library/WebAppPlugins/RSSWidget.bundle

edit URL in com.idevhaice.rsswidget.plist file

Replace http://www.9to5mac.com/feed with yours.

Save n Done !

Result : iG33kstas Feed in RSSWidget