Right now there are many ICOs coming out, is it really safe to participate in any of it and spend that much? In participating ICOs I have high hopes that these coins could be the next Bitcoin or other currencies that are really going up in the market.
safe or not it depends on the project developer or I can not figure it out, next bitcoin? no, I'm sure there are no coins that can rival or replace popularity as the first crypto currency.
Some of those may have a potential to become succes but some are not. I should say it is safe as long as you invested what you can afford to lose, it is risky but one will need to research the team or project developer's background and their performance and also their credibility. About bitcoins, yes I agree with you mate, I think as of now no one can rival or replace the standing of bitcoin (like the hell they could just kick the pioneer cryptocurrency

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