people are thinking irrationally, that is a fact, and new coins or most of them are using marketing tactics more than taking care of the project itself, they are hiring more marketers and designers than developers.
it is a good way to check if the project is serious or not, to check how much of time, and money they are spending on marketing and how fast they are adding features to the project
No, most of the projects now are scam and all things that has been put into documentation coule be fake. This is the problem with it because no third party that will be used to filter these ICO being promoted here in te forum. Even so if there are groups making a way of listing good project to which for them will be successful still it will fail.
Never to invest in cryptocurrency maybe ideal except for bitcoin and other strong altcoins.