diff --git a/README b/README
index 425e4c2e..9b5fcf01 100644
--- a/README
+++ b/README
@@ -4,6 +4,11 @@ Ultra low overhead massively scaleable multi-process, multi-threaded modular
 bitcoin mining pool, proxy, passthrough, library and database interface in c
 for Linux.
 
+CKPOOL is code provided free of charge under the GPLv3 license but its development
+is mostly paid for by commissioned funding, and the pool by default contributes
+0.5% of solved blocks to the development team. Please consider leaving this
+contribution in the code or contributing to the authors listed in AUTHORS if you
+use this code to aid funding further development.
 
 ---
 LICENSE: