A rowing machine on which a user simulates a rowing or sculling motion. A position detection means is disposed outside of a bearing member with respect to an axial direction. In at least one embodiment, pore pressures of the seeding solution within the media are at least sufficient to overcome the gravitational forces acting on the media within the column. In one embodiment the longitudinal and cross-bed conveyors and the tine structures are carried on a flatbed beneath the surface thereof. Different browse configurations can be determined for separate portions of the requested network content.