For many, they use Swagbucks to earn extra money by making several surveys every day and being rewarded for that, but this site is not just doing surveys and that's it, it's more than that. The truth, the most valuable thing of this online prizing site is their cash back promotions. I make all my purchases online by that means, since you get Swagbucks points (SB) for each purchase, in stores like Amazon, Walmart, target, home depot, etc. I can also subscribe to certain services like Hulu through this site and get points in return. Through the daily surveys you can make points and redeem them for a wide variety of prizes, from gift cards to prepaid visa cards and paypal cash.
Being a sales staff you can observe this site as to do a market study. Review collected by and hosted on G2.com.