Well Bovril, the link is infact not informative, and full of falsehoods.
The page on the validity of the old testament is not a demonstration of anything. Infact "fulfilling" means adding something to the extent that the rules are completed. Now, when you read the New Testament, it has a 99.9999% (I have doubts about one phrase, in truth) of absolutely non-violent content. How does a non-violent message complete a violent message? By introducing it into a non-violent context, and changing it not because it changes the detail, but because it changes to overall image. The detail is still the same, the message changes.
The rest of the site is just what one finds around the web today. Promotion of reverse-bigotry, christian-hating, refusal of the roots of our civilization (which are graeco-roman civilization and jewish-christian relgion). One web page is not enough to understand the first page fo the Bible, let alone its whole meaning. But it can be a useful tool to spread quick lies about, and mistrust towards, the good aspects of religion.
Satanists and Christ-haters (noticed the black page, red characters? just a hint of course) are just like integralist christians. People with an agenda who has nothing to do with salvation, freedom, virtue, and truth.