It's weird to compare Internet readings to print readings. The study should be done between e-books tablets such as the Kindle, Nook, Kobo and print version of a book. As for myself, I like both. I tend to prefer e-books because I find it more convenient. I can get the definition of a word I don't understand, I can highligh paragraphs easily, the battery is amazing and in the long term, it's cost-efficient.
I love my kindle, but I still love a good print book. I can write in a print book, I can flip through pages and quickly recognize what I'm looking for. Print books really do smell nice too. But I like reading for pleasure on my kindle, it's much more convenient, there's a built-in backlight so I don't have to worry about a light source or I can lay in bed with the lights off and still read until I fall asleep. There's advantages and disadvantages to both.