Detailed description:
You have an idea of what you want to see on a picture. You start a new Auction and set the maximum amount of Extra Votes you want to spend on a pic. A certain amount of Extra Votes will be put on hold from your account, you can't use them on WHentai for voting. The Auction expires after 48 hours automatically and Extra Votes return back to your account.
Once the Auction started each of our Artists is notified about the idea and the maximum amount of Extra Votes you will spend. If he's fine with the idea, he will bet his price (how many EVs he wants for the idea) and maximum time to commit. Other artists will do the same.
While Auction is still running you might choose the artist with the best bet. He will create a pic based on your idea.
Sometimes artist's bet might be higher than your budget, so we added an ability to "crowdfund" a commission to handle such cases. You might allow other users to add their details to your idea in exchange of their Extra Votes. For example: you created a idea "Naruto fucks Tsunade" and state 50 Extra Votes, another user of whentai might add a detail: "Tsunade fucked in reversed cowgirl position" and add 50 Extra Votes to the idea. In this case the idea would "cost" 100 Extra Votes instead of 50 Extra Votes. Generally, the most skilled artists focus on commissions with more Extra Votes, so it will be a great advantage. To allow this feature, just check the box "Allow additional details by other users" below the Idea box.
Every artist might take part in two Auctions simultaneously. The artist might bet again if the Auction he took part in will expire. Also he might bet again if he will upload the picture in the Auction he won.