Very helpful tip, thank you! I have struggled with this myself when posting about questionable terms of service on a large, but unethical site, and wanting people to have an easy link so they could read the terms for themselves, but not wanting Google to interpret this as me associating my site with a shady site.

There are many times when bloggers want to post about unethical or potentially damaging practices on another site to help other bloggers beware, or just to start a conversation (such as the Pinterest discussion of 2012 about copycat scraper sites).

It's not only about not wanting to give link juice to a bad guy; we all know a worthless scraper site when we see it, and we may want to use it for demonstration purposes in a post without sending Google a signal that it's our new best friend. This link tool is a great solution.