There are many weird and wonderful things on the Internet. Which is which depends on how you look at them. One person's weird is another person's wonderful. Some things manage to be both weird and wonderful! Or wonderful but weird. Whatever.
Here I introduce a few of both. I have given a bit of an introduction to the particular topic and one or two web sites where you can find out more. They are only a start. I have to point out that many of the sites are written by people who fanatically believe in what they are saying, or people who fanatically disbelieve, so take them all with the proverbial grain of salt.
Nevertheless, they are interesting, if only to show you some of the weird things that people believe in or do. I don't pass judgement. I'm all for individual beliefs providing they do no-one any harm. It would be a terribly dull world...