These are the suggested steps:
1) Have a stellar board of advisors and mentors.
2) Build partnerships with well-known organizations.
3) Get some kind of external third party recognition.
4) Take design seriously and make sure you have a strong web presence.
5) Write about your experiences online.
6) Get a major VC behind you.
7) Do your research.
8) Sell. Sales solve every problem.
9) Don’t worry about it.
These are solid points, its important to focus on building something people want. Once its validated and youre making sales, people will take your word seriously, whether youre young or old.
I'd have a hard time taking anything seriously in Forbes...