Here are some links to Cryptocurrency forums - If you would like a link added to this list; please contact @krumz or @stormy on http://ionomy.slack.com
https://ion.community - ion community run forum.
https://forum.gethashing.com - GetHashing forum, many coins discussed.
http://hashclub.org - Discussion on the Cryptocurrency scene with news and views included.
http://bitcointalk.org - Much varied cryptocurrency forum.
http://www.reddit.com/r/Ionomy - Ionomy subreddit.