Sorry, I can only guess whether HI is commonly scary. I would dare to venture that if everyone on the forum posted about their low intensity HI that was nothing special or breath taking, it would swamp/bury the occurances where people see violent images or experience high intensity HI and post about it. Try a forum search sometime. Scanning and searching techniques are invaluable tools when seeking information, and better to learn early than late, and so much more beneficial, even outside of reading about Lucid Dreaming!

Regards;Smee