Bullshit. You can always do a small research to choose the propper  project that as you think will show a good growth in future. Then take a look through their campaign and try to calculate the approximate number of tokens that you will recieve for 1 stake from theis bounty pool and then you will know if it is worth wasting your time by promoting this project or not.
This is not so different from the altcoin investing, you should do the same things.