I found a comprehensive website about welding and all its forms. I have just been perusing and it looks like all information comes from the members. Yes, you have to become a member inorder to participate and review some of the blocked sections. But if you just want some basic information and to use the site like a welding dictionary then membership is not required. However, if you want to participate and ask questions membership is a requirement. From what I have reviewed so far I really am enjoying the site and find it very informative. Enjoy!