At Cheezburger.com, our technology stack is built on Wordpress/PHP for the content sites (icanhascheezburger.com, failblog.org, etc.) and ASP.NET MVC 3 for the site that binds the network together (cheezburger.com). ASP.NET MVC does not have "performance issues" -- we comfortably serve over 8000 requests per minute per IIS server during peak usage.
Your choice of platform matters so much less than your ability to execute on that platform.
Biggest drawbacks:
It's not a completely open platform (e.g., ASP.NET MVC sources are "shared", but csc.exe, the C# compiler, is not)
It has a stigma of being heavily used in enterprise, and there isn't a lot of excitement around C#.
Your choice of platform matters so much less than your ability to execute on that platform.
Biggest drawbacks:
It's not a completely open platform (e.g., ASP.NET MVC sources are "shared", but csc.exe, the C# compiler, is not)
It has a stigma of being heavily used in enterprise, and there isn't a lot of excitement around C#.