Good point about the charitable status. What worked well for us in the past at Mahout was having a page (in our case publicly editable wiki page, but could really be anything) which lists ppl and companies available for hire in alphabetical order with a disclaimer in top that being listed means no explicit endorsement, how to get included and what the sort order is.
Maybe something like this would work for other projects as well or even at the ASF global level? Isabel -- Diese Nachricht wurde von meinem Android-Gerät mit K-9 Mail gesendet.