there is no safe way to grow your bitcoin, because they all have risks.
but you stay focused on the signature campaign, if you want to be safe without risk.
yeah. I agree. whatever investment you do will have risk. you can't invest with no risk 100%. growing bitcoin is not that easy.
and I think signature campaign also has risk, for instance : when you post off-topic you don't realize, sometimes you will be banned and some signature campaigns will kick out member who are banned; etc.