I put out a warning earlier. Can't be too careful on these links. They are non-US (non-dot-com). Many of them contain viruses or spyware. Dot -coms sometimes do the same, but I'm even less trusting of non-dot-coms.

In this case it was .tk:

".tk is the Internet country code top-level domain (ccTLD) for Tokelau, a territory of New Zealand located in the South Pacific. Overview. Tokelau allows any individual to register domain names."