[Photo: Joe Ciarallo/mediabistro.com]

Twitter CEO Evan Williams didn’t announce an ad platform today at the South by Southwest Interactive conference, but instead something he called an “at” platform.

@anywhere, a new platform that will integrate Twitter data with Websites.

“Imagine being able to follow a New York Times journalist directly from her byline, tweet about a video without leaving YouTube, and discover new Twitter accounts while visiting the Yahoo! home page-and that’s just the beginning,” wrote co-founder Biz Stone on the company’s blog.

The platform will launch with partners including Digg, The New York Times, MSNBC.com, eBay, Amazon, and Bing.

Some are already speculating on how Twitter can drive revenue from the platform, including having content partners pay for the data, as the company did via their deals with Microsoft’s Bing and Google.

Williams was not clear as to when the platform will go live.

On another note, Williams also mentioned that the company is sending sending cease and desists “every day” to shady Twitter marketing companies that look to scam the system by allowing people to buy followers and influence on the site.

More to come…