Abstract: Computer systems and methods providing personalized delivery of video files to a user's device. A computer server allows a user to create a user profile which includes information about certain user preferences, such as a favorite subject matter, favorite participant(s) and the like and, when a user connects to the computer server, the server checks a video database for video files of potential interest to the user and generates a ranking of video files of potential interest, then provides information and, if requested, the video files, to the user in order of the ranking. The ranking may be based on a variety of inputs, including both express and/or implied user preferences, the elapsed time between the publication (or creation) of a video file and the user's request therefor, the subject matter of the video file, the teams, players, and other persons included in the video file, the length of the video file, and a variety of other information about the video file.

Abstract: The invention provides a coupling for releasably securing one end of a rod-like member. To this end a body is dimensioned to receive the rod end and support a locking element. The locking element is displaceable with respect to the body to engage the rod end and is associated with rotatable camming means. Partial rotation of the camming means imparts a camming action to force the locking element into locking engagement with the rod end and further rotation of the camming means withdraws the element to unlock the rod end. The locking partial rotation of the camming means is through an arc of substantially 90.degree. and the unlocking further rotation is through a similar arc in the same or the opposite direction.