Export as data feed option is not coming in SharePoint list – PowerPivot Issues

After installing PowerPivot successfully, I was not able to see ‘Export as data feed’ option in list setting ribbon menu. Here is the link which will discuss about what are the possibilities for not having that option.

http://powerpivottwins.com/2010/08/21/help-my-powerpivot-for-sharepoint-lists-atom-feed-has-fallen-and-it-can%e2%80%99t-get-up/