In order to keep itself from running afoul of the SEC's 500-shareholder rule, Twitter has been...

|By:, SA News Editor

In order to keep itself from running afoul of the SEC's 500-shareholder rule, Twitter has been preventing its equity holders from selling more than 20% of their stake in the company. The rule has already led to the resignation of a senior engineer. In addition, a leaked August e-mail from CEO Dick Costolo claims Twitter, currently valued around $8B, won't be ready to go public "for a couple years."