Other social media sites and platforms, such as Vimeo, Vine, etc. (If you think any of these should have their own page, feel free to create one and move the content.)

Podcast

• University of Iowa Special Collections, Historically Yours http://historicallyyours.podbean.com (@historicletters on Twitter) (Dormant as of 2018).
• Houghton Library, Harvard University, Houghton75 http://houghton75.org/podcast/
• Newberry Library, Shelf Life http://www.newberry.org/shelf-life 
• American Antiquarian Society, Past is Present http://pastispresent.org/2017/good-sources/a-new-podcast-from-past-is-present/

HistoryPin

• University of Scranton Weinberg Memorial Library, http://www.historypin.com/channels/view/7195265

Vimeo

• Linda Hall Library of Science, Engineering & Technology (recorded lectures): http://vimeo.com/user2667588
• CUL Digital Collections, Southern Methodist University: https://vimeo.com/culdigitalcollections

Wikimedia Commons

• Wikimedia Commons, local heritage center Hedemora gammelgård, Sweden, http://commons.wikimedia.org/wiki/Category:Hedemora_gammelg%C3%A5rd

Vine

• University of Iowa Special Collections http://vine.co/uispeccoll (Vine Closed, but the "archive" is still there)
  

RELATED

• The Bancroft Library, Social Media Sites (various), http://bancroft.berkeley.edu/info/socialmedia.html