Patent ID: 7865478

Claim:
A method comprising: receiving a plurality of content items; for each content item, determining whether the content item was previously reviewed by a user; where the content item was not previously reviewed, revealing the content item to the user; and, where the content item was previously reviewed, hiding the content item from the user at least by playing or revealing alternative content instead of the content item, wherein the alternative content is not part of the plurality of content items, and the alternative content consists of music, and wherein determining whether the content item was previously reviewed by the user comprises, for a second content item received a length of time after a first content item is received, where both the first content item and the second content item pertain to a same subject matter of interest to the user: where the length of time is less than a predetermined time threshold, setting a change threshold to a first value; where the length of time is greater than the predetermined time threshold, setting the change threshold to a second value greater than the first value; where a change in the second content item relative to the first content item is greater than the change threshold, concluding that the second content item was previously reviewed by the user; and, where the change in the second content item relative to the first content item is less than the change threshold, concluding that the second content item was not previously reviewed by the user.