I was just thinking out loud and about Social Media **in general** (just hypothisyzing):
People think that if someone writes a controversial comment on Social Media which sheds some element of truth to an incident or investigation that it can be used against them in court. At first glance, it may appear to aid LE and get a conviction down the road or at least help to narrow a POI. And that is true. However, people shouldn't get too happy about this, and I'll tell you why....
Think about it: a comment on Social Media can be used to work against an investigation if it is stated that a suspicious person (and their DNA) should be located in a particular spot (and why it would be there) that is being criminally/forensically evaluated. Therefore, the Social Media post can give a "forensic alibi" for someone if their DNA shows up in a location it shouldn't be, in a sense. It is a very clever strategy to geyt a possible POI off-the-hook, so to speak.
This is my theory and it pertains to Social Media in general. Social Media is a relatively new venue that we must now explore within the judicial/criminal system. It adds an interesting layer to an already over-worked law enforcement agency all over the world. It can be your friend or be your foe when it comes to an investigation, I think.
ykwim?
All moo