When it comes to technology start-ups, there are a lot of paths to success.
Some successful start-ups sell for a billion dollars, as Tumblr did this year to Yahoo.
When that happens, it’s a windfall for the founders of the start-ups as well as for the investors and some employees.
Other new companies are considered successful if they attract millions of users and venture money before going public, as Facebook did and Twitter is doing.
And still others are considered hot because their products attract demographic groups that advertisers want to reach or because they have come up with some new idea or technology that seems to change the way we live.
Read more... Start-ups seemed poised for some degree of success