diff --git a/readme.md b/readme.md
index 10c90a6..7dacaf4 100644
--- a/readme.md
+++ b/readme.md
@@ -255,6 +255,8 @@ A marketplace connect supply with demand that lead to a financial transaction. I
 
 - How to Kickstart and Scale a Marketplace Business: [Constrain the marketplace](https://www.lennyrachitsky.com/p/how-to-kickstart-and-scale-a-marketplace); Decide which side of the marketplace to concentrate on; Drive initial supply; Drive initial demand. A 4-parts series with dozen of interviews of people with direct experience building and scaling marketplaces.
 
+- [A Rake Too Far: Optimal Platform Pricing Strategy](https://abovethecrowd.com/2013/04/18/a-rake-too-far-optimal-platformpricing-strategy/) - A bit of vocabulary: “In a casino, the term *rake* refers to the commission that the house earns for operating a poker game. (…) While casinos use the term *rake*, a plethora of interesting word choices exist which all describe the same thing – keeping a little bit of the revenue for the company that is running the service.”
+
 ### Cloud Resources
 
 This sub-section focus on bid/ask mechanism matching resource producer with consumers. Most of the time these are one-sided markets with the big platform trying to amortized under-utilized inventory.