[athorax]

  "I know my product is flawless, so the problem for any reviews that are less than 5 stars must be with the reviewer."

I disagree with this sentiment. They seem to fully recognize that plenty of people won't like their product, but the issue here is getting negative reviews from people who likely would have never spent actual $ purchasing it and therefor aren't in the same frame of mind as an actual customer.

[fastball]

Ok, but that has nothing to do with implementation and everything to do with concept, which should be obvious to anyone who is thinking about participating in Vine before they do so.

[athorax]

Agreed, but that also doesn't change the fact that Vine appears to have serious flaws in its reviewer selection process