Look at a sample of images or videos that have been tagged by users and separate the tags into three groups: those you think could eventually be done automatically by image processing and object...

Look at a sample of images or videos that have been tagged by users and separate the tags into three groups: those you think could eventually be done automatically by image processing and object recognition, those you think would not be possible to derive by image processing, and spam. Also decide which of the tags should be most useful for queries related to those images. Summarize your findings.