Anyone Know How To Join Amazon Vine ?

Hi Folks, Anyone Know How To Join Amazon Vine?

I've been reviewing almost everything I buy on Amazon Prime for almost two years now. I've done 300 Reviews at the time of writing this with 925 helpful votes. I'm in the top 1500 reviewers.

I do get emails from companies everyday that want me to review their products. These companies also offer a refund or big discount but doing such reviews is outside Amazon's user policy.

Example Email:

Dear Amazon Buyer,

We are ------------ company, one praticed and trustworthy seller on Amazon. We did overseas electricity business for more than Ten years. From Alibaba to Amazon.

Here we invite you for testing our Pocket Guitar to improve your finger dexterity . We can offer for free and we need 5-stars review with pictures. If a Video, we can pay 10 more dollars for that.

Product Inforamation:You can search "guitar 6 fret practice tool" on Amazon, and our product is on the 1st page as bellow:

=== PICTURE IS HERE --

Two ways to get our Products:
1.99% code: we offer 99% off code. Please notice that in order to keep the safty of our Amazon Account, we can only offer 99% off at most .
2.Full Refund: we will full refund you by our Paypal account(full price add 4.4%+0.3, it is 16.88dollars)

Please show us your Amazon order as well as your paypal account after you buying our product. We are going to refund you in 24 hours. We have one colleague responsible for the refund work. We often refund you once we see the order number.
If you are interested in our product, please take no hesitate to contact us. Your early reply will be highly appreciated.

Best regards

From what I understand, Amazon's Vine Program is invite only. But when do they invite you?

Is anyone here in the Amazon Vine Program?

Thanks,

Greg