There are a couple of reasons why a post you have made might have gone
There may have been a technical error
Low content posts are removed
Our system identified the post as spam and deleted automatically
Someone else has access to your account and deleted the post
If your post is a shared link, we try accessing the link over a period of time, if the URL is unavailable (produces any other response other than a HTTP 200), we automatically remove the post
We will test URLs posted to our platform periodically and automatically. If a domain name becomes unavailable for a period of time, then we will block outgoing links to the domain and notify the visitor