("Internet users forever")
Internet-käyttäjät ikuisesti (IKI) ry is a society that provides its members, private individuals in Finland, permanent iki.fi-addresses with e-mail and WWW forwarding services. (quote from the web page, http://www.iki.fi/ )
Joining is cheap and there's no annual membership fees. Users have e-mail address
in format (username)@iki.fi (mine is email@example.com =) and redirectors have format http://www.iki.fi/(username)/ (mine is http://www.iki.fi/wwwwolf/).
Why I got my redirector from there? Well, since they collect joining fees, there's no banner ads, and the service is pretty stable and fast. Sometimes, you get what you pay for.
The name is, I suspect, retroactively invented - "iki-" is a prefix in Finnish for "eternal".