Personally , I don't think there should be an ICO without whitepaper. The whitepaper bridges the gap between an investor and a company. Can we say a ICO without a whitepaper is a scam? Or what can you say about an ICO without whitepaper
Ico without whitepaper is a no go for me, how can you trust someone else with your money when you don't know what they will do with your money and they can't explain what their plans are. Whitepaper is one of the most important factor to decide whether to invest or not so if they have no whitepaper then i won't look at the project.