Mistakes, Humility and Brand

GiveWell displays the mistakes they've made on their website - http://www.givewell.org/about/shortcomings. 1) I admire the transparency and humility. 2) I'm not too confident and I don't really know (because this stuff is complicated), but I sense that this is a brilliant branding move. a) I think it establishes a trust with users. b) I think it makes users feel more comfortable and motivated to submit feedback and start a dialog. Perhaps more companies should do this.