No, i did not read it at all. If you just want to participate in a signature campaign or social media campaign it seems like reading a whitepaper is not necessary. I just see how many participate and who the manager is. If you want to invest in an ICO project, it would be better if you read whitepaper.
Yes but without looking into the project and the details of it you might waste your time if you enroll your self on a future shit coin, i can say that we should at least take time and consider on understanding the service that the project are offering since it is our responsibility to advertise only those good coins with the best team.