This is not an entirely new concept - Project Daedalus examined the possibility of a fusion-pulse driven interstellar spacecraft.

In /t/DID there's a pic on the right that has many different faces printed on balloons - representative of the common perceptions of the condition.

While I do not personally know anyone with DID, some think it manifests in victims of severe and sustained trauma as a coping mechanism. Since DID sufferers would likely have experienced some form of PTSD, there is an increased likelihood of readers having psychological triggers - the real kind, not the "someone disagreed with me on Tumblr" variety.

Satire like /r/circlejerk would be less necessary if this community doesn't descend into obnoxious groupthink.

If a strong hive mind does grow here, then you bet some of us are going to take the piss out of it.

That was also a part of reddiquette, though everyone seems to have forgotten that over the years.

Dissociative Identity Disorder, judging from the pic and the request for trigger warnings where appropriate.