What I mean by decent is where you can really see that it is growing and it can give you profit that is enough to be reinvested.
Call me dumb but I really don't know. I'm sorry.
My only source of coins is my signature campaign. I earn about less than 0.1 BTC per month.
Any advice would be much appreciated.
If you are doing some investment and you get your ROI back and your profit BACK don't invest on second time or don't reinvested it you're just giving a chance of scammer scammed your bitcoin and signature campaign is really good source income every month or per wwek depends.
But if he is getting profits from his investments then he can trust that place to reinvest it, as not all sites are scams and if you do good research before investing then you can expect good returns from it.