Thank you kindly! It seems that WolframAlpha is venerable and stable. I first heard of it long, long ago. (Was it only released in 2009? Seems older.) It must

Thank you kindly! It seems that WolframAlpha is venerable and stable. I first heard of it long, long ago. (Was it only released in 2009? Seems older.) It must have amazing staying power. It seemed like a quite powerful tool. Why is it such a well-kept secret?