VuePay has just started it's work, so it is not easy judging about it's efficiency or perspectives. However, it uses Ethereum platform, which is reliable.
It is supposed that users get benefits from ads paid by advertisers. Something like this.
I agree about Ethereum's reliability but still can't understand why do I need to purchase this tokens now if they will pay my rewards in them (like for free)
And yes, it's just marketing agency and nothing else.
Generally, ICO(s) is really cool opportunity to raise funds for a small or even family enterprise. I do a lot of research in ICO(s), whitepaper(s) and so on every day and about 50, maybe even 60 % of projects are doing nothing and idea is @Phhhh@...