diff --git a/issues/IDEAS b/issues/IDEAS
index f46fd15..57900cc 100644
--- a/issues/IDEAS
+++ b/issues/IDEAS
@@ -3,6 +3,9 @@ Tips
 introduction to timeout
 webzine has a dark mode, how to enable it in firefox / chrome
 how to use openrsync from base system
+cvs -z9 option
+/tmp in mfs
+$ chmod 700 $(userinfo $(whoami) | grep dir | awk '{print $2}')
 
 Links
 -----
@@ -10,3 +13,11 @@ OpenBSD on the Huawei MateBook X (2020)	https://jcs.org/2021/08/20/matebook
 OpenBSD on the Framework Laptop		https://jcs.org/2021/08/06/framework
 My Fanless OpenBSD Desktop		https://jcs.org/2021/07/19/desktop
 Bluetooth audio on OpenBSD		https://jcs.org/2020/11/18/openbsd_btaudio
+
+Communities
+-----------
+List various communitis around OpenBSD : 
+* [reddit](https://reddit.com/r/openbsd/)
+* [Mailing lists (of course)](https://www.openbsd.org/mail.html)
+* IRC: #OpenBSD on irc.libera.chat
+* XMPP : OpenBSD on openbsd@chat.si3t.ch ?