I'm still pretty new to be honest. I've entered probably 100 in the past month and a half, so many of those will be delivered over the next 4 months, and since they are still so early (in their ICO stage) it will take a year or two to really know if it will be worth anything. But if you can get involved for 3-4 minutes of your time, which most can be, I think it's well worth it (but not for every one).