You can contribute to future success of Sandy in many ways:
Financial help/support
To offer financial help, sponsoring, see the Donation tab
Contributing to the project
To contribute code examples, patches, or code-based documentation, see the developers page and tasks repartition.
Momentum and reputation
The more people who know about and use Sandy, the more likely its momentum will continue. So spread the word!
Blog about it and include links to http://www.flashsandy.org
Support and help
To offer technical support to other users, you can frequent the support forums. See the Support tab