Getting structured data out of web pages — often referred to as "web scraping" — is a real need, particularly for people whose job it is to prepare and analyze the information that's available in web pages. Meeting this need is right up the alley of a data extraction tool, such as Import.io.
The Punkrock.org API uses POST and GET calls that allow a user of your app to access their own user info on Punkrock.org, including friends, mail, notifications and allows them to upload photos. Requesting an API key is required for access to services.
In May, PW reported on Gumroad's API that aimed to simplify online transactions. Indeed, the earlier release did move Gumroad towards its goal: "to democratize the ability to sell stuff online." However, Gumroad's latest offer, Platform API, simplifies the online buying process even further. The earlier API required buyers to register for a Gumroad account and required the use of links. The Platform API removes the need for links and buyer accounts. Instead, an entire transaction occurs on the merchant's site.