Challenges are the new way to publicize contests. You go to the main page of like Wallpapers or Fan Art, and click Challenges in the submenu, and that's where the info about the contests is located.

Sorry about that.^^' Adam just added this feature. It's a new way to do contests and stuff.

oh I asked Jess about it. Well its a new thing. It will show on the home page on theotaku site. If you want to enter a challenge like Jess's go to fanwords and on the bar on the top of the page go to challenges and it will explain the contest.

I have the same trouble o__o

looks like i'm not the only on i got challenged by Jess too