Wintub located at wintub.com, which claims to be the most popular spot online to earn cash for watching videos or TV show trailers, appears to be untrustworthy. This is because Wintub's website was registered 48 days ago, so it is a new website, but claims to be the most popular video watching earner. Also, the only way to contact Wintub is via their email address. They do not have a physical address, so you cannot tell where they are located.
About Wintub
What I have noticed about wintub.com is, while browsing it, it occasionly opens up popup windows that go to spam and survey websites. Some of the spam or survey websites are untrustworthy websites attempting to steal personal information.