On: Ask HN: How do you develop MVP if your main feature depends on an external API?

[pmtarantino]

Yes, I could scrap some webpages, but is it okay to make a business out of it?

[AznHisoka → pmtarantino]

No right answer. But many other businesses have done it. Look at SEOMoz, who've built tools centered around scraping Google results and social media pages.