Reward: 500 points
Toluna Surveys is another survey platform that you can use.
I personally do not like taking surveys on their site, as they take up a lot of time and the user interface is worse than Milieu.
What I do like is the Consumer Insights Program, where they reward you for anonymously tracking your web browsing data.
You are able to exchange your points for PayPal transfers and other gift cards.
If you do not mind sharing your data with Toluna, this is a great way to earn some passive income each month.