http://www.preventon.com I did a search for 'preventon' and no matches so it seems ppl don't have any views on this? Saw it recommended on a shopping channel.
There are several reviews that are quoted on the site that you provided. Checking to see those reviews, I could only find one case where the review was available online. It was an old, mediocre review in fact - a 'roundup' comparison of several firewalls, the others all being well-known here at Wilders. Prevention received 3 stars; fair. Still, there's not a lot of information. If you give it a try, maybe you could be the spark that causes a word of-mouth boom for this product .