ICOs are the wild west venture right now. It's really hard to tell which ones are worth investing into and which ones are just basically false hope to count on.
The real idea/best way to spot one would be to start using the services / product offered by the project implimenting team even before any formal ICO plans are announced to the public. If you see yourself genuinely using the product than you can be very sure of a successful ICO when launched.
ICOs have become increasingly popular as a form of crowdfunding by effectively allowing trading and recording ownership of shares public and encrypted blockchain of this era.
As for me, I only invest in ICO which based on real ready product and which I can hold on long term basis.
Right now it is so much to choose from, that's why i'm placing this post for you reading it to suggest and tell follow steemians why they must invest on a particular ICO you suggest/name and have hope of over 1000% of return on investment in next few months.