| 摘要 |
A first set of categories of content of broadcasted programs is provided. A category from the first set of categories of content of broadcasted programs is added to a second set of categories of content of broadcasted programs upon the category from the first set of categories of content of broadcasted programs being selected. Alternatively, a category from the first set of categories of content of broadcasted programs is added to the second set of categories of content of broadcasted programs upon a broadcasted program viewing device being tuned, for a period of time at least equal to a first predetermined threshold, to at least one broadcasted program predetermined to contain content included in the category from the first set of categories of content of broadcasted programs.
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