Each time I had to use scraping (like for http://hackerbooks.com http://hackerbooks.com or http://learnivore.com http://learnivore.com) I choosed to ask the own

Each time I had to use scraping (like for http://hackerbooks.com http://hackerbooks.com or http://learnivore.com http://learnivore.com) I choosed to ask the owner first. I think it's better to get in touch and just ask.