Sorry for the vagueness of my message; we are in stealth mode and about to launch.
My startup is in stealth mode for two more weeks. I was able to show a massive celebrity in my space what I built, and they absolutely loved it. He made me a unique video while wearing a hat with my logo, saying, "Hi, I am (blank from blank), and I am on (stealth mode startup). I am going to give one lucky person who enters this contest a one on one meeting. Sign up today for a chance to win! Good luck"
Everyone will know this person in this space. We are talking millions of people.
Does anyone have any advice on how to launch a viral contest? There are quite a few contest services out there. This is a big opportunity and I don't want to blow it.
You could tease the contest on social media. Create a teaser video, or simply a pic, mentioning the celeb, which is definitely something that will make people engage with your contest and share it with others.
I would see if you can host the contest on your website so you can pick up some nice links and social shares to your site.
Maybe reach out to journalists (the legit ones know how to keep a secret) in a field and provide them a embargoed press release. Then they all go live more or less together, creating the buzz you need amond the people who follow the industry. All the best.