Abstract: System and method for content assessment is disclosed. The system has a memory, a processor connected to the memory, a receiving function, a decrease balance function, an increase subject value function, and a making subject value available function. The receiving function is configured to receive, from a first user via a first client device, a request to indicate approval of a subject. The decrease balance function is configured to decrease a user balance associated with a first user account of the first user. The increase subject value function is configured to increase a subject value associated with the subject record associated with the subject. The making subject value available function is configured to making at least a portion of the subject value available for a second user, other than the first user, to redeem for use in experiencing the subject.

Abstract: A reciprocating scotch yoke drive mechanism connectable to a motor drive shaft, includes a yoke member connectable to the shaft which moves the yoke member in a linear reciprocating motion and a guide having one or more slide tracks configured to define a reciprocal sliding path for the yoke member. The yoke member also has a sliding formation configured for slidingly engaging the slide track. And the sliding formation and the slide track have complementary configurations for maintaining alignment of the yoke member during reciprocal sliding motion and engagement of the yoke member in the slide track under a variety of angular stresses.