I joined the Netflix bandwagon late, but I've still been a subscriber for almost 5 years now. I love watching movies through the streaming system, and it's ubiquitous. I'm pretty sure I could stream movies to my toaster if it had a screen.
Last year, when Netflix started down the road of splitting the streaming service and the DVD service (the short lived Qwikster), and the subsequent backlash from users came about, I cancelled the DVD by mail portion of my account.
Concerned with the future of Netflix, I decided I wanted my data from their system. I'm primarily a perl programmer, so I went looking through CPAN. I found WWW::Netflix, but being based on WWW::Mechanize meant that changes to the site would likely cause any script(s) to break.
I wanted ratings for all of the items I'd provided ratings for. Seems easy enough. I just go get my list of ratings and ... oh, I can't do that? I have to provide a title to get a rating? And I'm not even providing a film title, I'm providing a URL to the film within the API? Ok. Let's go get my films ... oh, I can't do that either? Ok, I just need to fetch my Rental History. This leads us to Problem 2.
When I get my Rental History, even though I'm authenticated to Netflix as "me", it doesn't include my rating. Which means I need an additional API call to get it. Now, the Netflix API provides me the ability to pass multiple film urls to the ratings call, and I can parse them. Sadly though, there are no examples of the data coming back, which means I have to burn through API calls to determine the structure. Which leads us to Problem 3.
I'm limited to 10 API requests per second, or 25,000 per day. Which sounds like a lot. Until you run out. At which point, you're screwed. It's not a rolling day either. It's a midnight to midnight day. There's also no way to see how many API calls you've used in a day, so that you can try to spread things out. There's a developer forum, but it's full of spam, and doesn't really seem to have much attention paid to it. There doesn't seem to be a way to increase your API limit either.
It's taken me almost 2 weeks to fight through the API to get the ratings data for the 455 movies that I've gotten. Sadly, every day that I go over my API limit causes a portion of the day to be wasted, so I can't get all of my data in one swoop.
I'm frustrated with the Netflix API. For a company built on other companies APIs, you'd think their's would be better. Sadly, it's not.