Here are a few excerpts:

"Each monthly contest will reflect a specific theme or topic. We want to see your images that depict or represent that theme."

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"Prizes for each monthly contest will vary, but will most likely include:

1st place - 80 GB Video iPod, featured image on home page and in monthly newsletter
2nd place - 30 GB Video iPod and featured image on home page and mention in monthly newsletter
3rd place - featured image on home page and mention in monthly newsletter"

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"Entries must be new and cannot already exist on the site..."

For more info, see here:

http://www.stockxpert.com/forum.phtml?f=showtopic&n=2181