
Google has just announced a web API for their most excellent search engine, which allows you to query their servers from within an application and received the search results back as structured data.
In a nutshell, you can search Google without pointing a web browser anywhere near Google.com. In fact, you can search Google without a web browser at all! Talk about possibilities
The API is implemented with SOAP, which is a very cool move on Google's part because it opens the field up to any programming language with TCP/IP and XML functionality... which happens to include PHP.
No killer apps are comming immediately to mind, but I'll be thinking about it. :)