diff --git a/index.js b/index.js
index cf1062e..68f41e3 100644
--- a/index.js
+++ b/index.js
@@ -17,7 +17,14 @@ app.listen(PORT, () => {
 app.use(express.static(staticpath))
 
 var thumbCount = 0
-var thumborInstances = [
+
+// Proxy images through thumbor instances that alternate to prevent:
+// 1. Direct communication with Youtube Services
+// 2. Getting rate limited
+// 3. Gathering too much data from one source
+// more thumbor instances will be added
+
+var thumborInstances = [ 
     "https://thumbor-production-0e82.up.railway.app/",
     "https://enormous-book-production.up.railway.app/",
     "https://unusual-back-production.up.railway.app/",