How about them new groups (from 2015.07.12 to 2015.07.17), ey?
Popular Crossovers
Applejack's Parents
You Died Because...Reasons
Honest Plot-Readers
Star vs. the Forces of Evil
Disturbed fan group
My name is not Anon (nsfw)
Android RP Group
Dazzling Sun (nsfw)
My Little Pony anime
Secres of the Night
[adult swim]
Luna Needs a Throne
Rotten Apples
PinkieDashLight
Ponies watching YouTube videos
French Bronies and or Francophile Bronies
dragonponys
The Steampunk Brony Workshop
Pixels and ponies
Youtubers in Equestria
The Group for Bronies/Pegsisters Who Want to be RandoM
Modders Unite!
prim hemline
Vid Fics
Prince Artemis
The Stones
Darth Vulcans Army
Food Porn (nsfw)
Jane Austen Fangirls (and boys)
The Princessverse
Grim Morbid Dark and Otherwise Unsettling Comedy
Derpy Is Best Kitty Kat!
Lemon Lime
My Little Writers
The Royal Family
Sphinxes
StarCraft Displaced
Equestria composers society
Request a story
MLP:FiM Next Generations
Angry Review Recovery Group
Trek Wars
Masked Beauty
Mother/Sister Figures
adventure fanfics
Different species in love
Rainbows Curse (nsfw)
Erotic Crossovers (nsfw)
Universalist (nsfw)
Molestia's Library
The Hero... Prince Blueblood?!
Unapproved Fics- The MLP Fics You Never Got To Read
FlashLight99's Library
Midnight's singles club.
who to ship
Hawaiian Splash Fan Club

I'm still shocked that Applejack's Parents didn't exist as a group prior to my creating it.

4554296 It's a good thing that you fixed the void.