"Google has announced a new Ajax Feed API makes it possible to extract information from multiple RSS feeds with only a few simple lines of JavaScript. The API?which allows web developers to retrieve RSS data as either XML or JSON?can be used to build mashups, unique web applications that leverage multiple sources of data and display the results in a useful or innovative manner."
"Google's Feed API allows developers to circumvent the same-origin policy?a security mechanism designed to prevent JavaScript code from accessing content associated with a web page from a different domain?without having to manually implement complex server-side proxy mechanisms. The Feed API transparently leverages Google's server-side FeedFetcher, the RSS capture and cache mechanism used by Google Reader."
" for a special API key that is tied to a specific URL. For instance, if a developer registers a key for http://mysite.com/mydirectory, that key can only be used in pages that are in that directory or its subdirectories. Developers will have ... read the whole article
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