In 2011, I added an anonymous feedback form to
gwern.net
. It has worked well (116 entries) and justified the time it took to set up because it encourages people to correct various problems or tip me off on things. If you have a site, maybe you should add one too.
For the full writeup, see http://www.gwern.net/About#anonymous-feedback
Account, I think. All my submissions languish at +1. One or two since the penalty have made it to the main page, and those two were non-gwern.net, but I can't judge from just those two whether there is an additional gwern.net penalty.
EDIT: I asked one of the HN admins and he said there was no penalty on my account or site he knew of, so I'm not sure what it is now.