Is mutation testing useful in practice?

Question

Do you have any examples of real life applications of mutation testing? Does it work better than simple test coverage tools? Or is it useless?

What are the advantage

Answer 1

I recently did some investigations on mutation testing. Results are here:

http://abeletsky.blogspot.com/2010/07/using-of-mutation-testing-in-real.html

In short: mutation testing could give some information about quality of source code and tests, but it is not something straighforward to use.