Just like in any other businesses or potential investments, you do not just jump into it because it's growing. You need to be able to trace back the performance of this potential business/investments, and be able to understand its present situation and value, and more importantly what it has to offer in the future and if it can last for as long as your investment will take. Many coins are growing, developing, and doing well, but won't we want to consider the ones that have been around, performing extraordinarily, and have a strong potential to only get better? I think those will be of better choice to gamble on.