You don't know it, but I owe you an apology.  I read the original "It's a Sorority Thing" and the immediate sequels back in 2011, and while I didn't leave a review at the time, I liked them a lot and I thought of them as the archetypical "tiny dude gets passed around a sorority" series.  I remember puzzling a bit about how these girls had come by their shrinking powers and how they were getting away with it, but I'm sure I decided that this was just another size story where the author didn't work out all the world-building details.

I was delighted to see you pick up the series again last year, and I was hopeful that we'd get a better explanation of how all these college kids have world-altering magic and why no one seems to have noticed.  I was particularly pleased to see that you branched out into the fraternities and shrunken women.  "Fight Night" was an excellent addition.  The interactions between the shrunken slaves added some needed depth to the world, as well as the giant exchanges they eavesdropped on.  I kept waiting for some "lore" or explanation of why this multi-generational cabal of magic-wielders seemed satisfied with keeping shrunken slaves instead of, say, taking over the world.

And then I was embarrassed to read the Epilogue where you all but say that the series has been a (smutty, juicy, delicious) metaphor for the plutocratic elite that has already taken over our real world.  D'oh!  Of course no one is looking for all those missing people, because they aren't in the 1%.  It also explains why none of these elite shrinkers are shrinking each other even if they have serious rivalries; you can't use your class magic on members of your own class.

Well done and congratulations!