I released few days ago a website in software deals niche and I implemented a viral marketing system that helps vendors to promote software offers using their existing customer base.
Basically customers are announced that the software they use is on sale and from the deal page they can recommend the deal to friends using social network or email. They will be rewarded with a premium membership which gives them higher discounts and a longer promotional period for other deals if they bring 20 new registered users for ex.
I know that here are many experienced people in viral marketing, what are your suggestions regarding this matter?(1)
How can I make the most of it?(2)
What other things I should take into account?(3)
And a common questions, where is the best place where I could start finding users, what startup websites do you know?(4)
Thanks for your help