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In a blog post last night, Twitter co-founder Evan Williams announced he's leaving his day job at the company to launch a new startup. The news comes two days after the revelation that co-founder and inventor Jack Dorsey, ousted as CEO in 2008, will be returning to the company. In a flash, the tech press responded to Evan Williams's announcement with a surprisingly heartfelt chorus of well-wishing

Mark Evans at Twitterrati toasted Williams for overseeing another startup success story in a post titled "Good Luck, Evan Williams."

"Many people forget he also founded Blogger.com, which was purchased by Google in 2003," he writes. "The vast majority of entrepreneurs are extremely lucky to have one success, let alone two major successes. It's a testament to Williams' vision, work ethic and luck."

Read Write Web's Marshall Kirkpatrick doubled down, thanking Williams for creating a service that "profoundly changed my life" and is "helping pay my first mortgage."

"I love Twitter," he begins. "I love the clean URL structure and public nature of the data. I love the way it lets me find and curate lists of people around a common topic, like people who work in a particular field or at a particular company. I love the way I can subscribe to those lists in interfaces like Tweetdeck or Flipboard."

In Williams's post, he predicts Twitter will only become "bigger and better" with time--a forecast Ronny Kerr at Vator News nods along with. "He's probably right." The only bit of criticism today belongs to John Gruber at Daring Fireball who found Williams's swan song a tad thankless. "Seems like he forgot to thank or even mention CEO Dick Costolo. A simple oversight, I'm sure." Here are Williams's parting words, which were notably friendly towards Dorsey, his former frenemy:

Now that Twitter is in capable hands that aren't mine, it's time to pick up a whiteboard marker and think fresh. There are other problems/opportunities in the world that need attention, and there are other individuals I'd love to get the opportunity to work with and learn from. (Details to come.)

While I doubt I'll get so lucky a third time, as my good friend Biz Stone likes to say, "Creativity is a renewable resource." Let's see what happens.

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