During its mission to raise popularity in the midst of the dot-com boom in '98, TravelZoo gave a few free shares to each person who signed up for their mailing list.
Hypothetically, let's say I'm building a website that is a catalog of restaurants. The usefulness of the website is based on how much data is listed. Data is mainly user-submitted, and any person with an internet connection can find a restaurant and add it.
The issue is incentivizing this crowdsourcing. Can I do something like TravelZoo and promise one free share of the company if it is successful and later incorporated to every person who submits a restaurant? Is this strategy effective, and what are the legal barriers to be aware of?