It says there that I will need to bid at least 1 eth in order to secure a job that is supposed to give me money in exchange for my skills alone. Why is this so? If I'm looking for work, I don't want to pay money upfront to receive said work. How is this site named working for bitcoins when I have to have some money first before I can start working? 
Also, that 15 ETH posting for a data entry job is sketchy.
Also, that 15 ETH posting for a data entry job is sketchy.
You are Bidding on the Job, when bidding on a job, you are indicating how much you'll charged to do the work. This is different than bidding for an item/product/service, where you are indicating how much you will pay for it.