Yes, but if more developers used these flags the world would be a better place. Whenever I have the time, I build with these flags and report bugs back to the upstream developers. Then I drop the flags and move on with my life :)
Furthermore, I wish I had known earlier how much I could contribute to the open-source community by simply downloading a product, walking through their documentation, and submitting corrections, and little usability improvements to both the interfaces and documentation. It's an easy way to start learning your way around the code and internal architecture.
