I have a site with Hebrew verb conjugations (http://www.pealim.com http://www.pealim.com), which generates c. $150/month with 60k visits and 6 pages per visit.

I have a site with Hebrew verb conjugations (http://www.pealim.com http://www.pealim.com), which generates c. $150/month with 60k visits and 6 pages per visit. Re: scraping - I don't think it makes a big difference whether you have subscription or ad revenue here. My site can be scraped of course but I don't plan to make serious money on it anyway. Your project can do better or worse depending on the visitors' demographics.