I'm guessing all of them scraped the website and they are all using the data they scraped. I've done a lot of projects like this before. The first couple of years its easy. But it can get annoying over time because the website can change, they can add anti-scraping measures, etc and it becomes a whole cat and mouse game. I've been forced to just remove features in the past because I didn't want to play that game anymore and it has always sucked.