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There are multitude of ways that males compete for females, and that females select males. Among jumping spiders, males often perform very elaborate courtship dances.

Wayne Maddison and collaborators have posted many videos of spider dances on the web.
Spider dances
(These movies are not part of the "Principles of Animal Behavior" web site. The movies range in size from 1.3MB to 4.9MB.)

You may try your hand at a self-scoring quiz on the next page, or skip ahead to the section on how jumping spiders are beginning to speciate. Scientists at the University of Arizona have just published a study suggesting strongly that this incipient speciation is being driven by sexual selection.