This is great! I for one have always been writing scripts as a hobby. Film-making business has always been a closed circle, even in foreign and indie markets. An additional channel into the circle for people outside of Hollywood couldn't hurt.
The deal sounds great, I'm too busy to market my script properly, but I can just upload it to them, get feedback, exposure, possibly win some money, and maybe make $200,000 if they buy it.
Worst case scenario is I leave in 18 months with just my script again -- but I figure that's the expected case for self promotion anyway.