I think we need to remember that while votes from friends, family etc obv help a lot, there will also be casual browsers who will vote for cats they like the look of.
I know what you mean, Helen, and while I like the idea of doing everything we can to get a Purrs winner and win the food for a rescue, I suppose I just feel that putting all our efforts behind one cat and, effectively, withdrawing all the others from the competition is going against the spirit of the competition.