Twitter continues it’s relentless feature update/removal process. I’m almost sure someone will be inconvenienced by this.
We’ve been growing the family of products that makes up Twitter for Websites, including, for example, yesterday’s launch of the ability to embed timelines on a website. As Twitter for Websites has evolved, it has improved upon many of the features we introduced with @Anywhere: Tweet box, follow, linkify a @username, sign-in, and the hovercard. As a result, we are sunsetting @Anywhere and focusing on continuing to build out Twitter for Websites.
(via twitter dev blog)