MediaBugs, the Knight News Challenge-winning service for correcting errors in media coverage, has produced some interesting research into the publication of corrections and clarifications by US news websites
We found that of the websites of 35 leading daily newspapers we examined, 25 provide no link to a corrections page or archive of current and past corrections on their websites’ home pages and article pages. Only about half, 17 of the 35, provide a corrections policy of any kind (which we define broadly as any explicit statement regarding corrections practices). Sixty per cent of the newspaper sites (21 of 35) do provide an explicit channel (email, phone, or web form) for the public to report an error to the newsroom. However, in most cases this information isn’t prominent or easy to find.