MEM devices are fabricated with integral dust covers, cover support posts and particle filters for reduced problems relating to particle contamination. One claim recites a method including: processing data representing audio or video content; based at least in part on derived information, obtaining data associated with the audio or video content; and providing a report to a client or remote location. The prepregs and and the prepregs and are characterized in that they contain inorganic filler. The system then creates a list of edges within an ambit of the target point. In the inoperative position, each kickback-inhibiting member is positioned upwardly away from the workpiece so as not to interact with the workpiece. The outer blades may be formed from a stamping or punching process, and the inner support may be molded.