title: Potential issues of chmod 777 on a directory?
body: <p>Assuming that I have this directory structure:
  /tmp/mysockets/appname/</p>
  
  <p>What are the security drawbacks to doing chmod 777 on /tmp/mysockets/?
  Could another user delete or mess with the reference to the appname/ directory?
  What I want to do is allow other users to add their own directories to /tmp/mysockets/ but I don't want to allow them to rename it or delete files/subdirectories which are already inside it (owned by another user).</p>