The eBay Ruby library by JJ Buckley interacts with the eBay Trading API, that works with items, listing, and users. To use the eBay trading API, a developer key is needed. The keys will be used starting with the access to Ebayr, followed by generating a RUName using the Ruby gem.
The number of available web search APIs has been reduced in recent months; Google and Yahoo have shut down a number of their web search APIs. This is the first part of a two-part article covering the state of web search APIs. The second part highlights search APIs provided by Google and Microsoft.
When Amazon recently implemented what it calls "efficiency guidelines" in its Amazon Product Advertising API, the online retail giant took some developers by surprise. The change was meant to limit access to sites that did not send buying customers. However, a change to your code is required to ensure that you receive the correct level of access. Those that didn't make the change were subjected to the lowest limits. For some, that meant lost revenue--both to the developer and Amazon.