Influenster is a free to join community of trendsetters who love to review products, give their experiences and opinions, but you do have to be invited from current trendsetters or request to join.
Basically, Influenster is a place for culture junkies to come together and share their unique opinions of products and experiences. Active members of Influenster get exclusive access to deals, promotions, and swag from brands that thrive off the input (the good, the bad, and the ugly -- they just want to know what's up). (Right from the website and couldn't have said it better myself.)
Very important. As a contributing member of Influenster, you get the chance to share your knowledge and know-how with other like-minded people.
You also get exclusive discounts on products and services based on the Expert Badges you unlock. You’ll have access to content and sales based on your influence and area of expertise.
As an active influencer, you’ll have the chance to get invites to Influenster programs so you can try the latest and coolest products catered towards your lifestyle before anyone else.
Members who participate actively on Influenster and engage in programs increase their opportunities to receive rewards.
If you participate in online challenges, play interactive games, spread the word to your friends, and
gain currency within our system, you’ll earn serious street credit.
So come on and give it a try. You definitely won't be sorry that you did! They have also just redone everything and made it much more easier to navigate and to do the challenges and badges.