Isaac “Biz” Stone says goodbye to Twitter

Isaac Stone, one of the co-founders of Twitter, says he is leaving the social network for pursuing other dreams regarding his career, Associated Press announces.

At 37 years old, and only five years after the founding of Twitter, Stone announced on Tuesday on his blog that he retired from the Twitter crew and leadership. He said he is going to “get out of the way” until he is called to be of help. However, he said that he will work with Twitter “for years to come”.

Taking some time off the micro-blogging company will help Stone focus on other areas he may be of help, as he said it himself. He is planning on helping schools, nonprofit organizations and company advisory boards. He and Evan Williams, who is both his friend and co-founder of Twitter are also planning on relaunching Obvious Corp in order to develop some new projects. Williams left Twitter at the end of last year. In his place came current CEO Dick Costolo “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.” Williams said at the time of his departure.

Obvios Corp. was first launched by Williams in the mid 2000s in the shape of a holding. The efforts of the two Twitter geniuses will be backed-up by Jason Goldman, who was also an executive at Twitter. He stepped down from his post in December 2010.

Stone’s decision comes as Twitter has made efforts to build upon its popularity. Its aim was to sell more ads and, as a result, to make more money. Even though the company never unveiled its finances, the research firm eMarketer Inc. estimates that this year, Twitter will earn from advertising over 150 million dollars.

The departure of Biz Stone is marking one more point in the changing patterns of the company’s structure at the managing level. The migration of the Twitter original owners is at its peak. In the fall of 2010 Evan Williams left the company. In December Goldman Followed. Six months later we see Stone saying goodbye. However, the trend is disrupted by  . This March, another Twitter co-founder changed his mind. This time, original CEO of the company, Jack Dorsey, came back, in order to see how his product has developed. He retuned as executive chairman.

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