I joined to its signature campaign. It came from bounties. I was going to sell at first rise. It worth to wait. It went out on the bull market. I didn't sell at the second. I started to wait after big bear. Still waiting. We waited 3 months on their signature. For the development of the project, not it is a mandatory to wait.
I still keep the monetha tokens I get when I join the signature campaign, and have not thought to sell at the current price is still too low, don't know how long will keep it but I'm sure the price will still go up again.