it's what darkinferno says. homepage looks so 2001. It should get a new web 2.0 design and should be more dynamic. Also the level editor look soo 99-2000. These things get catched by the eye, even if the engine features and lite-c is good, what people see first is the homepage and editor interfaces.

there could be an open contest with MONEY prize (like $1000 but not the pro version). That could also draw some attention, and more people at least try the engine.

As for manual, it's one of the best documentations out there.