Безопасен ли anticrawler.org?

This site has come to my attention through referrer spamming on my websites. Any site that promotes itself through referrer spamming is not to be trusted. Also, what it does is offer a piece of javascript to put on your web pages to supposedly prevent bad bots from accessing the page.That script calls another script that is on the ***** website. Even if that is legitimate as it is, which I doubt, this opens the possibility if not likelihood that malicious code would be served. That makes this site actually DANGEROUS, even though I cannot know for sure that this site harbours or will harbour malware.