We - laut.fm, a user generated radio platform running about 1300 radio stations in germany - are being blocked by facebook.<p>It started last Thursday. Suddenly any post or chat message containing the string "laut.fm" would be blocked with the following error message:<p><pre><code> You can't post this because it has a blocked link
The content you're trying to share includes a link that our security systems detected to be unsafe:
laut.fm
Please remove this link to continue.
If you think you're seeing this by mistake, please let us know.
</code></pre>
In addition our facebook page disappeared. It reappeared on Sunday, but any posts between last November and now where missing.<p>We have no further information about what might be offending facebook. Our site is pure organic user generated content. We don't do any special SEO tricks.<p>We and several of our users reported the blockage via the link provided in the error message to no avail. We reported an issue with our facebook page here: https://www.facebook.com/help/contact/164405897002583?rdrhc . When trying to debug the issue via the facebook debugger (https://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Flaut.fm) one gets the error message "Failed to get composer template data.". Using a link shortener to post laut.fm links won't work either. I worked through the points on this list: http://stackoverflow.com/questions/13185406/facebook-wont-share-a-link-to-my-site without success.<p>The most frustrating part is not even being blocked, but being left in the dark about the reasons.<p>We are out of ideas. I use this HN post as a last resort. Any help or hint on how to proceed would be highly appreciated.<p>Niko.
I am the engineer at Facebook responsible for this mistake - my apologies, and I've already fixed it. The domain was blocked due to a false positive on one of our automated classifiers used to fight spam. While we strive to have 0 false positives, some do happen. We are investigating how this happened in the first place and will be adjusting the classifier accordingly.
I'm not familiar with this aspect of Facebook, but it looks as though they do provide a reason in the message, though: "...includes a link that our security systems detected to be unsafe." unless this is just their catch-all phrasing for links that they don't like for some reason. Have you looked into why they may think your site is unsafe? Is your user generated content properly sanitized? Are other *.fm links working? How are you hosting (maybe the IP range is banned by some other malicious activity)?
BTW: I just posted the link to this HN post on Facebook. This worked. However, if anybody else tries to share my Facebook-post it get's blocked, because the excerpt contains the string "laut.fm". Hilarious.
That total lack of accountability really, really sucks. If I'm a domain registrar and my DNS servers go down, I'm liable for damages. Same if I am a hoster. Or, to stay in the meatspace, when I am a railway/flight operator, I'm liable by law for delays.<p>Yet, if Facebook or Google decide to block, downrank etc. my business, I have <i>no legal options</i> at all, I don't even have any transparency. Everyone is at the mercy of the Cloud Gods. That has to change.
my site Facebook.com/keepitessential is also blocked. What did you do to fix that? I get "The content you're trying to share includes a link that our security systems detected to be unsafe" when I try to share it.