Oh, yes, the most important question!
There are many ways you can contribute to OpenGoo.
1. OpenGoo is developed mainly by a company (
Feng Office). Making use of its services is certainly a way of contribution.
2.
OpenGoo wiki is a very useful source of help, documentation, and
3.
The forum is a great resource too. Posting your ideas and replying to people when you feel you have an answer is enormous help to the community.
4. Testing beta versions and
reporting bugs at the forum helps mature and improve OpenGoo.
5. If OpenGoo is not translated to your language you can help with translations. Translating OpenGoo is very easy (unless it is a RTL language).
6. Spreading the word. If you have a Web site (blog, forum, twitter account), tell your friends how pleased you are by OpenGoo, the software, and its charming community.
Those are the ones that pop up to mind right now. Yet, I am sure others will think of more ways to help.
Thank you!