"But, in general, each of the positive weights P and negative weights Q may be assigned different values. [0112] As described above, the media clips referred to in FIG. 10 may be video clips, audio clips, or other media clips. [0113] In an embodiment of the process depicted in FIG. 9 where both P and Q are determined by formulas, user actions again may not be weighed the same." . . . .