No answer, just advice. READ FINE PRINT WHEN ENTERING! A lot of contests practice "rights grabbing" where by entering...not winning or making it to finals.....gives them complete ownership of your image.
So technically, if you enter one of those contests with that in the print, and enter another one you are violating a copyright of an image that you took and can face legal trouble.
It's a sad and dirty practice, but it's definitely something to look out for and one of the main reasons I steer clear of contests on the web.