What is a historical lock, and what is it used for?
I want to provide an answer for the following question What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
This is one of the popular questions, and answers are frozen. Does that mean no additional answers can be provided?
I believe questions such as this should never be closed since they are related to language features, which evolve over time. There is always the possibility of new answers.