Twitter CEO Evan Williams just announced that Twitter will begin a step toward individual website integration with a new platform called @anywhere. The announcement was made during Williams’ keynote speech this afternoon at SXSW.
The new integration will allow developers to plug-in to @anywhere to integrate “basic” Twitter functionality into their website without users needing to navigate away from the page - basically more value without the heavy lifting, as Twitter so kindly put it. 
So picture this, you arrive to the NewYorkTimes.com and right there on the page you will be able to follow reporters and other staff people whose Twitter name is associated with the New York Times. The Twitter blog also suggests that you will be able to tweet about a YouTube video without interrupting it.
There are more @anywhere features planned, as Twitter says the current items are “just the beginning.” This is one-step further for Twitter, who has been needing to integrate a “Facebook Connect” like move that Facebook debuted last year, and is currently dominating the field in when it comes to the idea of a social media operating system.
Most importantly however, Twitter is making this simple; where a person behind the organization can drop @anywhere with a few lines of JavaScript instantly on their website without using any difficult API language that is mostly learned before implementing. During the announcement today, Twitter said that @anywhere will be available to just initial partners at first, those include Amazon.com, YouTube, Yahoo!, bing, Msnbc.com, AdvertisingAge.com, Digg, eBay and a few more!
All future announcements on the @anywhere platform will be made from the @anywhere Twitter account.
Stay tuned for more information as it breaks!