I am new to cloud9 and clicking around to see what is possible. It seems like I can do a wget google.com from the bash command line just fine, but when I click preview running application, and try to go to google.com in the preview running application browser window it does not work.
Welcome to Cloud9 and thanks for asking about this The preview window is only intended to show your application or files. The reason behind that is that Cloud9 IDE is for development purposes only. Resources are provided as a symbol of goodwill and to help developers everywhere. We take action to ensure that Cloud9 is used for development.
With that said, the in-IDE preview window is just an iFrame so it will be limited by any restrictions you have/impose on your browser.