I had invested one ICO previously, it failed although I didn't contribute a huge amount on it. A news yesterday made analysis on blockchain ICO projects, mentioning 92% of these ICO projects are failed.. Should I stop investing the others or any really potential ICO suggest?
You can invest when ever and as much as you want if you have the full details of the coin you are investing. I would suggest you to invest in altcoin because it has a low price and it will provide you good profit if your active with the coin chart of price.