Cash Crate is a survey site that has more ways to earn money in areas other than just surveys.
Cash Crate is very similar compared to TreasureTrooper and InboxDollars because of the ways you can make money. You can take surveys, play cash games, shop online (percentage of total purchase you receive), do trial offers, sign up for sites and more.
Insiders In recommends Cash Crate because there is good money to be made. Cash Crate also has a very good referral program.
Insiders In gives Cash Crate 4/5 stars.