Repeat votes

Schools were ranked on the average rating they got, from five for excellent to one for poor - not simply how many votes they picked up.
Some people might have misunderstood what they had to do.
“When you rate, you need only click on one multicoloured coat,” the website explained.
“So, for example, if you wish to rate the choir a four, you click on the fourth coat along in the row. You should not click coats one, two, three and four.”
But there have also been claims that people not only repeatedly gave their own choir the highest rating, but also repeatedly gave a low rating to competitors.
In their “frequently asked questions”, the producers said it had been “far more popular than we anticipated”, with hundreds of votes per minute straining the database.
In answer to the question, How come I can vote more than once? they say: “We identify voters via a bunch of different measures. Some of these measures take place after you’ve voted.
“Periodically, we sweep the database to remove votes for the same choir that we believe come from the same person.
“This system isn’t perfect, but we have gone to considerable lengths to ensure it is a fair as possible and we believe it is generating accurate results.”