Twitter may be growing rapidly and creating new revenue streams, but it looks as if the company...

|By:, SA News Editor

Twitter may be growing rapidly and creating new revenue streams, but it looks as if the company is far from ready to go public. Businesses large and small are keen on using Twitter as a marketing platform, but are often at a loss regarding how to proceed. That's a big reason why Twitter's $139.5M in estimated 2011 ad revenue, while up sharply from 2010, is a small fraction of Facebook's $3.15B.