On September 12th, Twitter announced it is using the JOBS Act to confidentially file an initial public offering. View the tweet here. Reuters noted that under the JOBS Act's "on-ramp" provisions, companies with less than $1 billion in revenues can file a Form S-1 registration statement confidentially. And although Twitter meets that requirement, with its 2013 revenues estimated at $583 million, the company is valued at over $10 billion.Confidential IPO.