The graphs are for # of views to questions on SO involving that language. What it likely means for C# (and PHP/Java, etc) is that the user-base is maturing and stabilizing, and not as many questions need to be asked (or found). For C#, it could also have something to do with the fact that the MSDN .NET docs have vastly improved over the past 3-5 years.
The graphs are for # of views to questions on SO involving that language. What it likely means for C# (and PHP/Java, etc) is that the user-base is maturing and stabilizing, and not as many questions need to be asked (or found). For C#, it could also have something to do with the fact that the MSDN .NET docs have vastly improved over the past 3-5 years.