Personally, it's replaced Python and Ruby for my web development. I like the compile-time typechecking and the ability to annotate structs and then use those annotations as direct rules for serializing data via XML / JSON serializers. The compile-time typechecking means I don't need 100% coverage to make sure I haven't typo'd a variable name somewhere.

But if you weren't using Python or Ruby for your web development, YMMV.