Man, many times people have said many types of acid exist. Its simple chemistry, 100 mc fits nicely into alcohol solvent, which is abosrbed into paper, alcohol is evaporated leaving LSD in paper.
There are many kinds of lysergides/indoles similar to LSD, but all are products after you already have LSD, in weaker dosages, and more difficult to construct, all with similar effects. LSD is LSD in blotter paper. I have had three of the same LSD blotters with three different reactions. I am not normally prone to visuals, and LSD seems to only do little for me visually, whether it is a Getafix, a sunflower or a Hoffman. Set and setting guide 90% of the effects, especially the types of thoughts and the interpretations of the world around you that arise.
Reiterating Horsey's post, set and setting. I believe this to be with all drugs, including MDMA.
Horsey, I love your twin man! HE ROCKS!!! Almost as much as you do!
Open to argument and suggestion!