What made me believe in ghost (in some way) was the site called SFOGS. I checked it out with my classmates in school when I was in 3rd grade and watched a certain video. It said "stare at this blue towel for 40 seconds" and we did. Before the 40 seconds was over, a "ghost" popped out out of nowhere and we were like "asdfg". The site even had pictures of a mermaid's skeleton system, making me believe that mermaids do exist. Unfortunately (of fortunately), the site has been taken down already. They're are new sites such as SFOGS Returns and such, but they're not even close to the old one.
Why was the site deleted?
Well, they were a lot of rumors about the deletion of the site. Some people said they run out of money to maintain the site. Some said they moved to a new site (but I don't know what the new address is and I can't find it). Another rumor is that somebody died of a cardiac arrest due to SFOGS. Probably he watched some of their videos (like the blue towel video), and BAM! Then the family filed a case against the site (is this even possible?) resulting the site to shut down completely. I don't have any reliable sources for these rumors, I've read some of these rumors over the net a few years ago. It's weird that I could still remember them.
Sorry for the long post. I don't even think what I'm talking about is related to the topic.