I admire your patience, you've given the borrower a year to respond before posting him on the board. I commend you for doing that but man, you've got to stop doing non-collateral loans especially with this not being your first time getting a defaulted loan or at the least do some sort of safety net for yourself because the loans you've got is a serious amount if you ask me even if they have a history of returning their loans, hopefully you can still get it back and if they do give it back, don't remove the red tag.
I don't quite understand it either, by defaulting on the loan they lose the opportunity to make money on that bitcointalk account, which is pretty stupid financially speaking.
I can't speak for all of them but I believe that this kind of people are after the quick bucks instead of long-term money especially in this forum, we just have to understand that not everyone likes to post in a forum about stuff related to the theme of the forum everytime.