Here are some articles that you could read.
Burgundy-Report ยป Rebuy – No
Bill Nanson would not rebuy these Burgundy bottlings. So think twice before trying them.
1WineDude : Where Are The Ratings?
“Simple – there aren’t any.” Nobody enjoys wines as points.
danah boyd, Facebook and Techcrunch: the costs of technological determinism and configuring users
Your Web tool may be working against you. So choose it carefully.

Thanks for the shout-out!