diff --git a/README.md b/README.md
index 8998a4b..3a68297 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,10 @@
 tunasync
 ========
 
+## Ideas
+
+- use [etcd](https://github.com/coreos/etcd) to store configurations and state variables
+
 ## Design
 
 ```