Inappropriate links can be hidden by flagging those links. Your help is appreciated in keeping this service clean and safe for the public to use it.
In the link lists, there is a flag symbol. Click it and a flag form pops up. Select the appropriate flag and the button to submit it. It might not hide right away because a routine process on the website needs to run first. Note that if you open the link in the edit screen and flag it, the link may go into your read or unread list. To prevent that from happening, just flag it from the list instead of the detail screen.
Do not abuse this ability to flag links. If you wrongfully flag links in order to censor them, your confidence level will drop. If it drops too much, Zholink will not respond to your flags anymore. The same goes for tagging links: don't wrongfully tag links in order to boost their search.