I strongly occur with above
Assume all social media may be searched and seen by Adcoms so always be professional. One of the admission directors at a particular school is doing her doctorate in social media and medical student selection.
There was a lengthy thread recently on this
forums.studentdoctor.net/threads/has-social-media-ever-doomed-a-strong-applicant-in-your-experiences.1134926/
This is a much larger issue for medical residents in applicant selection with many medical specialty academies and GME (residency) programs issue guidelines and, in some cases, strict agreements on social media use while in a program. The reason for this has been patients and families have started to look up doctors who are treating them. A case then was a 3rd year peds residents was treating a young girl and the next day the parents came in screaming to take that doctor away from my daughter or I will sue. Turned out the parents were freaked about a photo from a drunken frat party taken some 10 years earlier was posted on a social media site with this doctor tagged. (I will find the original case report and add it).
In the meanwhile there have been a slew of studies done on this to the point that AAMC has guidelines for applicants (first in list)
https://www.aamc.org/students/aspiring/324178/socialmediadoesnthurt.html
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3758042/
http://www.ncbi.nlm.nih.gov/pubmed/23139411
http://www.amednews.com/article/20121127/profession/311279999/8/
http://www.medscape.com/viewarticle/731175
http://www.ojphi.org/ojs/index.php/fm/article/view/2161/2026
http://jepm.seahq.net/VolXVI_IssueV_McHugh.pdf
Some medical schools have added an internet background search step usually post-interview, per-selection as due diligence to find any obvious issue. With automation and some software this is easy to do
Lastly, I personally know of 3 cases where comments made on here on SDN about a school post-interview were identified by the school and the applicant was not accepted. In many cases it isnt too hard for a medical school to identify with their comments.