Flickr Commons is five years old and, to celebrate, Flickr has created galleries of the most viewed, 'favorited' and commented-upon images. The Commons was launched in 2008 with 1500 photos, in partnership with the US Library of Congress. Five years later, with several more partner institutions on-board, the collection of public domain photographs comprises more than 250,000 images. According to Flickr, these images have generated more than 2 million tags and over 650,000 comments. Click the links below to see the galleries of most viewed, liked and commented-on pictures, as selected by the Commons' member institutions. 

Richard M. Nixon and Elvis Presley at the White House, 1970 (US National Archives)

via The Next Web

Click here for Flickr Commons Favorites Gallery #1 Click here for Flickr Commons Favorites Gallery #2 
Click here for Flickr Commons Favorites Gallery #3 Click here for Flickr Commons Favorites Gallery #4