diff --git a/subfiles/addon/bcma.md b/subfiles/addon/bcma.md
index 55960a9fea..2bf66646f2 100644
--- a/subfiles/addon/bcma.md
+++ b/subfiles/addon/bcma.md
@@ -1,3 +1,5 @@
+Use KarmaAPI to detect stealthy Cloudflare domains
+
 ### Block Cloudflare MITM Attack!!
 
 `Let's fight against the growing MITM attack on the Internet.`
@@ -7,19 +9,29 @@
 | ![](../../image/goodorbad.jpg) | ![](../../image/dsfgs_bcma_i2p.webp) |
 
 
-```
-
 This add-on will block, notify, or redirect your request if the target website is using Cloudflare.
 
-The purpose of this browser add-on is to block Cloudflare sites.
+The primary purpose of this browser add-on is to block Cloudflare sites.
 
-The TLS protocol promises end-to-end encryption between the client and an authenticated, identified endpoint server. The browser’s lock icon is a UI widget which makes this promise to the user. Cloudflare is a mass-decryption chokepoint, which intercepts and decrypts the Web requests made by billions of people to millions of websites.
+The TLS protocol promises end-to-end encryption between the client and an authenticated, identified endpoint server. 
+The browser’s lock icon is a UI widget which makes this promise to the user. 
+Cloudflare is a mass-decryption chokepoint, which intercepts and decrypts the Web requests made by billions of people to millions of websites.
  
-This add-on never send any data.
-Your cloudflare-domain collection is yours.
 
-```
+- Start your own Cloudflare Collection
+The add-on remembers cloudflare domain and keep it locally like a collection book.
+You can review, export, delete or disable your collection anytime.
+It is your collection; this add-on never send it online.
 
+- About "_Use KarmaAPI to detect stealthy Cloudflare domains_" settings option
+This add-on does not make internet connection by default.
+This option is disabled by default.
+If you enable above option, the add-on will lookup only domain name (e.g. `https://www.mozilla.org/blog/ -> send only "mozilla.org"`) with [Karma API](../service/karma_api.md) service.
+And if the domain is listed in our Cloudflare Domain list, the add-on will block/redirect/notify you based on your preferences.
+
+
+
+---
 
 - Looking for `Palemoon`? [Block Cloudflare Requests (Palemoon)](../../tool/block_cloudflare_requests_pm)
 - Download add-on