All screening costs are incurred by the developer - that is, they have to wade through every CodeMill issue (wildly lowball $5 offers included) to find one that

All screening costs are incurred by the developer - that is, they have to wade through every CodeMill issue (wildly lowball $5 offers included) to find one that's worth their time. They then fork and study the codebase, performing the work on spec without ever meeting the organization or reaching a formal agreement. And then ... hope they get paid 90% of the offer? This arrangement sounds remarkably unfriendly to developers. Expect high churn among experienced devs, if they even show up at all.