One mans spam is another mans treasure. As long as you're not stealing content and posting it on yet another illegal tube site I got no problem with what David is doing.
As you for you Mr Tiggs,
SEO is not dead but let me give you a hypothetical situation. Say tomorrow the catholic church buys google and demands all porn sites be stricken from their algorithms. Far fetched I know but bare with me. If all your traffic and revenue depends on your google rankings you're screwed.
Getting traffic is about more then just kissing googles ass. There are so many ways to get traffic. Tumblr, facebook, twitter or any of the other thousands upon thousand of social media sites. It would be foolish to depend on google SOLELY as your main traffic source. Everytime a new baby panda pops up you'll be shitting bricks hoping your sites don't drop off the face of the googlesphere.
Now lets all eat popcorn and be merry

or bananas if you prefer
