monsterbacklinks.comは安全ですか？

Provides various black-hat services and malicious code. Risks: tracking, spam, credit card fraud, identity theft, malware. Do not provide any financial or personal data. Reference: *****

Anyone who promises "500,000 quality backlinks" for $97 is not running 500,000 quality websites of their own to post backlinks on. They're either running low quality websites, or else they're abusing other people's quality websites. Often the latter is done by creating fake user profiles on forums with backlinks in the signatures, or vacuous comments on blog posts, again, with backlinks in the signatures. However it is done, it is usually pretty obvious to anyone who sees it, and it is likely to be reported by the site owners in places like Web of Trust. Then your site suffers a loss of reputation when you didn't understand what you were buying and have no power to remove those 500,000 lame backlinks that stand as evidence against your website. If you think it's not harming anyone to create user profiles or to post comments that just say, "This is really interesting!" then think of how many clients they have to have to offer prices that low and how many sites they have to abuse to post 500k backlinks and how many other SEO companies are doing the same thing. Don't let your site end up being advertised by one of the users on the StopForumSpam top abusers list: *****