The FAQ pages are compiled based on questions from professionals like yourself. Some of the answers can be scientifically justified. Most are just the writer's opinions. You will not find here questions on topics you were afraid to ask your mother. Instead you will find questions ranging from "the starting grouter" all the way to "the seasoned grouter" (although the last one will not admit it was a question, instead merely a comment, he,he.. just kidding). And because all the answers are my opinions and I make them public, I also need to place the disclaimer at the bottom of the pages. For those of you who do not know yet, it is a lawyer thing.