ICO could be a good investment, or it could be a total disaster for you. Always do your own research before investing on it, but well, there is no safe investment as well,right? There are lots of potential ICO, but I believe most ICO will be a rubbish coin eventually. Always check their whitepaper, roadmap, circulating supply, and social media. This is the easiest way to check it (even though it's not 100% means you're safe though). I hope you invested on right altcoins!!