I am more than picky. I have only joined a handful of them. Those that I think are really trustworthy and the pre-ICO is a very easy sell. Everyone of us should be picky when it comes to investing in ICOs. After all, many of them are scams. We will always end up picky if we do our part in doing due diligence.
I follow closely SciDex. They are creating a new type of smart contract generator for complex transactions. So that even regular businesses that need legally binding contracts can be on the blockchain.