A great list of art contest can be found at www.theartlist.com.
There are a lot of online baby photo contests avialable on the web. you can submit to them and participate in the matches, you can find a list of top of them here www.mybabyphotos.net/baby-photo-contests
you can get information from the link http://artdeadlineslist.com/ar/
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A check of Google or Yahoo can give you a listing of these. You can also find some in certain magazines and books. You can also subscribe to certain websites for a fee that will notify you when these sweepstakes are available, The website http://contests.about.com/ is the ultimate page for contest and sweepstakes listings. You will have to search for juried contests or weed out the sweepstakes to find contests based on skills though/.
How to find an expired listing on the multiple service listing site
as far as i understand, Art of Tyranny is a browser based game available only on smartphones (cell phones that have web browsers). you should be able ot find it by pointing your internet enabled phone to airg.com and find the listing for art of tyranny.
You can find the normal rank contests in Pokemon ruby and Sapphire is in Verdanturf town
Online-Sweepstakes.com updates their website with new contests/sweepstakes daily.
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You find a Heracross at bug contests on Tuesday and Thursday
There is actually a wealth of information online about staring contests. One can find information on Wikipedia, wikiHow, and wiseGEEK. There was also an article written in 2012 in the Huffington Post about staring contests.