When cooking pasta, what the correct salt to water ratio?

See the link for an outstanding video on boiling water, and many of the other videos are inspiring (How to Stride Ahead #2). And, kosher salt is better than table salt.

http://www.tamareadler.com/2011/10/18/how-to-boil-water/

Use kosher salt, and add two tablespoons of salt for every 1 gallon/4 litres of water. The water will definitely taste like the sea, which is exactly the way you want it.

LL Stone and I cook pasta alike: it should taste like the ocean. Please promise us you won't use Morton's table salt. Use sea or kosher salt. Start with a palmful, about a tablespoon, added after the water comes to a boil, obviously so it'll dissolve. Taste it. Add more as needed. You'll be glad you did.

Use more than you think you should. I use a decent handful for a pound of pasta.

The water should taste like the sea.