WordPress.org

This is a widget to display items from Flickr in the sidebar or within pages and posts. This widget supports:

• Flickr RSS feeds
• Photostream
• Filtering by tag
• One or more photosets
• Favorites
• Displaying random items

Other features:

• Choose from three different thumbnail types
• Lightbox/Thickbox are supported
• Data is cached locally to lower server load
• Secure Flickr API used, to eliminate the risk of damage to your server, unlike some other Flickr widgets
• Flickrpress is a multi-widget, so you can use more than one instance (e.g., one in your sidebar, one in your footer)
• Use as a shortcode to insert into posts and pages -- multiple instances supported in the one entry

Flickrpress uses the excellent phpFlickr library.