From NSIS Wiki
Questions about NSIS scripting? Want to discuss NSIS features and development?
It's highly recommended you read How To Ask Questions The Smart Way before you post your question to the forum. The link takes you to an external site that has nothing to do with NSIS. It's just an article about the smart way of asking questions.
Chat with NSIS users and developers (IRC client required).
Help improving NSIS
Patches are always welcome and are a great help.
NSIS RSS Newsfeed
More feeds are available on the project page.
Prefer talking about NSIS in your native language? There are some international communities available at this time: