We look at all the information available and compare it toempirical data on Prosper.com listings. The identified factors are thendivided into those which the borrower can influence and those thatare part of the credit report. Both types of variables are needed in thisstudy, but naturally the ones that the borrower can influence are theones we provide advice on. We examine different methods of comparing strategic options and choose the best methods andvariables for the Borrower Decision Aid. The decision support tool isthen constructed and tested. This study is limited to Prosper.comauctions only. The framework and methods of constructing theborrower (or seller) decision aid can, however, be extended to otherauction sites as well.