Bijan Sabet of Spark Capital and Jeff Bezos of Amazon.com, Inc. (NASDAQ:AMZN) have announced that they have joined Twitter’s Board. It was not revealed before today that Jeff Bezos was an investor in Twitter’s rumored $15 million third round of funding [GigaOm].

“Existing partners Union Square Ventures in New York City and Tokyo-based Digital Garage exercised their pro rata rights to participate in this round as well,” wrote Twitter founder, Evan Williams on the Twitter blog.

Twitter chose Bijan because he is a man that understands the direction of Twitter.  Bijan is “super excited about the possibilities.”  Bezos was selected because he is a seasoned veteran and because he is a source of inspiration for Twitter.

“Jeff’s attention to business process details and distinctive, ‘honk-like laugh’ are similarly admirable traits as far as we’re concerned,” added Williams.

Related Posts:

• May 22, 2008 -- Rumor: Twitter Raises $15 Million Third Round of Funding
• August 13, 2009 -- Boxee Raises $6 Million Series B
• November 19, 2008 -- Boxee Raises $4 Million From Spark and Union Square
• April 7, 2008 -- Investment Manager Social Network, Covestor Raises $6.5 Million
• November 20, 2009 -- Cooper Notification Suing Twitter For Patent Infringement