Rules
If it's not illegal in the US and not a dox, then it's fine. Also don't spam the site.
Info
The most important thing about these sites is actually staying online for a long period of time. This site will stay online for a very long time because it costs me almost nothing to run, and even if the site itself shuts down, links to raw post content will stay up because they're hosted on my media server.
You can take a look at the site's source code here.