Have you witnessed a third party site such as Tumbex, Tumblrviewer,
Photosugar, or Tumblrgallery that is mirroring your content on their own
service?
Websites such as these are not owned or operated by Tumblr, and they do not
have permission to republish your content.
These sites “scrape" content from Tumblr, automatically stealing and then
uploading your publicly accessible content on their own platforms. In some
cases, these sites may even look very similar to Tumblr. Unfortunately, our
options for stopping this behavior are limited.
If you’d also like to request that the content be removed from these third
party websites, we recommend contacting the hosting provider directly. You
can use this tool to help determine a
site’s host.
zhtwtumblrhelpcenter.wordpress.com 