A 2011 report by the Anti Phishing Working Group blamed Tokelau's bad reputation on the registry Dot TK. It acquired the right to operate the top level domain and is responsible for the current free registration system. .tk domains logged 2533 of 11768 (~21.5%) total phishing attacks in the second half of 2010 Internet-wide.
https://en.wikipedia.org/wiki/.tk
You're not going to convince anyone you're making a 350% profit while you're using a free .tk domain.