You can't be successful until you have some sort of finality; a cash out, a merger... something that adds to the bottom line (besides investors). Twitter is bui

You can't be successful until you have some sort of finality; a cash out, a merger... something that adds to the bottom line (besides investors). Twitter is building a huge base on which to make a pretty good size company that does some pretty cool things... So my answer is "So far; they are successful"