To add a bit of detail:
When the feces hit the rotary device concerning registerfly, a registrar that was taking people's money but not buying/renewing/transfering the domains, after a great deal of stalling and blame shifting, ICANN(t) tried to get the master list of domains held by Registerfly. Apparently some domain owners who used privacy were not listed and lost their domains.
BTW Registerfly is still in business, last time I checked.
Whois is spam bait, but I am surprised how little I get from that source. I occasionally get a excited snail mail letter telling me that I need to renew and that this company will kindly do the honor for me for $60. - -I do not see how they can afford the stamps. I even got one spam letter that used the graphics from my little town's city hall envelopes - return address was different, they just stole the picture!