Sometimes worh it sometimes did not it depends on a campaign manager whether he has a good guy or not but sometimes they runaway after the end of the ICO. It comes with airdrops you should have patience sometimes the developer difficult to distrubute the token.
There has two ways to earn bitcoin one is Mining which has a patience in every minute or hour you can easily gain bitcoin and Faucet is you can gain it by minute an hours and it's much similar in Mining.
Buy it and hold as long as you do bitcoin i have predict that i can growth bigger and bigger and in the future bitcoin swallow the currency in the world.
Not at all it's depends to a person Bitcoin can be gambling if you are gambler person and your mind is to easily get some many bitcoin. If you are smart person it earns with hardworking and time to have bitcoins.
So far i know PESOBIT (PSB) pa lg madami na sya exchange at maliit pa lg value nya mga150 sat sguro price nya ngayun pero maari pa nyan mabago if madaming investor dumating.