I have an Azure solution that I want to debug in Visual Studio 2010. I have two MVC sites configured as virtual applications in one web role - this structure makes sense in terms of cost and URL. Virtual application workflows are not automatically deployed, and therefore VS does not join it. After you click the URL of the virtual application (i.e. localhost / app1) in the browser, a new w3p process will start, and I can manually bind it. It's just interesting if someone out there has done this before, and you have a hint on how to automatically join the process.
A related message that makes it sound like you have to do it manually: http://social.msdn.microsoft.com/Forums/uk/windowsazuredevelopment/thread/f1c5d72b-9196-480e-ace6-3c9063be79a7
source
share