by geilt on WordPress.org
Enables a widget that will pull a twitter feed feed via API by Twitter @UserName and display them.
Since Twitter updated to v1.1 OAUTH, Twitter Application credentials are now required to be registered to authorize use of the Twitter API.
Create an Application
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Adds the post thumbnail to the RSS feed using the XML tag specified in the Media RSS Specification, as well as an IMG tag in the RSS content.
Display your Flickr photos in your sidebar.
Displays a list of RSS/Atom feed items given the feed URL and other parameters (optionals). Highly customizable.