Mailing Lists! 
You may subscribe to these mailing lists and participate in discussions by e-mail. Posts may be archived, you should probably only discuss topics that you are willing to talk about in public.
Global Scope - English
- CryptoParty Teamwork Discussions - global constructive organizing, announcements, discussing new content, asking questions, etc. :
Global Scope - Other languages
- Another mailing list for discussions in french language: http://lists.tetalab.org/listinfo/cryptoparty
Local Scope
- You might find additional mailing lists with a regional focus on a city's information page
If you are concerned about recording your involvement on the internet for all time, set up an email account through a free email provider over Tor and use only that email account in the web-browser logged in through Tor to check the list..