IMHO I wouldn’t expect this site to stay up for long. It is a literally a direct copy of Palladium Book's Compendium of Weapons, Armor & Castles. Palladium zealously protects their intellectual property.
If you can find it I heartily recommend the printed version as it includes much not on that website such as illustrated basked hilts, theory behind weapon evolution, and of course some castle floorplans.
One of the best resource books I have ever purchased by the way. By that I dont mean the smaller pamphlet sized one they have started printing in the last couple of years. I mean the 1/2 inch book packed with all sorts of goodness.