YouTube is obviously the well known social media and video sharing website. there are plenty of podiatry channels on YouTube.

Curated Resources:
http://www.youtube.com/user/PodiatryArena
http://www.spammerdumbassawards.com/youtube-spam/
http://podiapaedia.org/wiki/websites/social-media/you-tube/
http://www.youtube.com/channel/UCKP3QDybEDYtxM050oM0OaA
http://www.youtube.com/user/craigbpayne10
http://www.podiatryabc.com/y-is-for-youtube/
http://www.craigbpayne.info/find-me-on-youtube/