When Blaire shares her screen with everyone to show the Instagram pic of Laura's chat with Val in which Val told her to kill herself, but Blaire takes forever to click the link. After a while, we get this:
When Blaire turns to Chatroulette to find help, one of the people she's matched up with has a description that outs him as a hardcore console fanboy, terrible grammar and everything.
Early on, Blaire is trying to forward an email, but the button to do so has disappeared. An exasperated Adam shouts Oh my god, Blaire, do you know how to use a fucking computer? Given that Blaire demonstrates technological illiteracy throughout pretty much the whole movie, Adam is likely speaking for a lot of people watching the movie here.
On the "RIP Laura Barns" Facebook page, if you look closely you can see Laura Barns herself listed among the people that liked the page. After coming back from the dead, she wasn't just tormenting the people who had driven her to suicide—she liked her own memorial page on Facebook!
During the horror of Laura's rampage in the Skype call, a pop-up ad suddenly appears advertising "Free Web-Cams". One of the sample videos shown in the pop-up is of Blaire stripteasing for Mitch earlier in the film.
YMS: As of right now, [the video is] back online because it's just a fake, stupid thing for a movie. But isn't it kind of funny how quickly the movie was able to delegitimize its own plot?
The part where Adam killed himself. The atmosphere was everyone yelling at each other, making it so over dramatic, almost to Full House levels, that when Blaire showed the paper with the text, then his hand got possessed while holding his gun that the entire result is the most unintentionally funny part of the film. The fact that he doesn't show any reaction to what's going on & just goes on yelling before he's shot is just icing on the cake.
During the Never Have I Ever game, when Laura types "Never have I ever offered to trade Jess's life for mine" and Adam loudly accuses Blaire of doing so, which leads to Blaire, Mitch and Adam arguing over whether or not Blaire could have done it or not, only for Adam to admit it was him.