Relakks offers a easy and anonymous way to be on the Internet by tunneling all traffic through their service which is based in Sweden. This effectively means that your home IP is not revealed to websites, p2p clients and servers and all other computers and servers that you are connecting to.
The traffic is encrypted as well which makes it unlikely that someone is able to spy on it including your ISP. I have been writing about Relakks before and they had some serious troubles with their service at the beginning which turned off many users who tried the service initially.