Very interesting discovery! I guess the decision for its large-scale extraction will depend on the estimation of mining costs plus methane extraction. I'm pretty sure it won't go unused but I can't tell whether it is a viable technology in comparison to other fossil fuels. I personally have more faith in nuclear energy (updated fission technologies and hopefully fusion) as well as personalized alternative energy technologies for each country (solar, wind, etc). There are side effects here as well but the long-term advantage is incomparable in my opinion.