What are the chances your favorite pony was secretly a changeling all along?

Yeah, probably about one in one.

Amongst the many other things they are doing with their lives, the Crusaders decide to read fanfiction on their YouTube channel. They have absolutely no idea what they are letting themselves in for...

Inspired by rediscovering the classic 'Half Life-Full Life Consequences'. Takes place at various points in the Railway Adventure timeline.

This is a fic based on the Time Loop Files, the format of which was first codified by Innortal on fanfiction.net.
Here's a brief guide.
The basic idea is, one character (the Anchor, usually the main character of a fictional setting) is looping back to the very first moments of their parent series every time either they die or some kind of time limit expires. They of course end up monumentally stir crazy given enough time.
Eventually others start to loop as well.
The reset is not always perfect. Sometimes a loop's history will be different to the "prime" loop, or canonical plot.
"Crossover" or "Fusion" loops also occur, randomly. These can involve the home loopers having a guest, or the anchor for one universe spending time in another, or replacements of one character by another.
Vacation Loops are where the Anchor (or others) decide/s "buck it" and lets off steam by doing whatever comes to mind. There's little or no attempt to maintain the original timeline.

In addition, and particularly more recently, it should be known that this story has a collaborative element to it - people may submit loop ideas or loops, ideally at the Spacebattles thread (a link to the current version of which is on the Trope page), and they may become included.

There's two page image options, thanks to Filraen - the current page image has been edited by the original creator from this work of theirs.. The other one is here:
http://hourglass-vectors.deviantart.com/art/MLP-Loops-466030169

The year is 22xx and virtual and augmented reality have come a long way to the point of even with a modest set up anyone can enjoy it. All you need is a computer and a special set of glasses. With VAR computers are capable of taking any image or video and in real time extrapolate a fully 3 dimensional view through the glasses allowing people to quite literally be a ghostly observer of their favorite movies or TV shows.

Thomas an avid collector of old forms of media from the 20th and 21st centuries manages to get a hold of a rare set of master discs for the animated series My little pony Friendship is magic. He decides to run it though the augmented reality program and watch it for the first time as if he was there. Things quickly take a turn for the weird. Will he hurt or help those around him, only time will tell.

Edited by Dark Chocolate

*Edit* Added the sex tag to this. There's nothing explicit nor anything actually happening, but since I mentioned it if figured I'd have to add the tag.

Every Friday, from five in the afternoon to eleven at night, Pinkie Pie does volunteer work. She doesn't have to do it, the world won't stop if she doesn't, but she chooses to do it anyway. Even if it's doing seemingly insignificant little things.

It is a matter of life and death, after all. Literally.