Here is a deal where I was sitting West and we were playing count signals. I led ♣J from a 6 card suit. It went to the 9, 2 and King. The 2 told me that declarer must have started with AK stiff. I was also sitting with ♥KQJ, so it was easy for me to continue clubs and defeat the contract. At the time I thought "Thank God for count signals"
After reading Ralph's very instructive posts on signalling, I was thinking "What should East play if attitude signals were agreed?" It would seem that East must encourage even with 3 small as she does not see any possible switch that might be better. So thanks Ralph, you have opened my eyes on attitude signals.
However, I still think there might be a price to pay. Take the situation in "Another signal" (contract 4♠)where instead of West leading the ♦K she leads the Ace. You see ♦QJ10x in dummy and you have 3 small. In this situation surely a count signal will give partner the necessary information on whether or not to switch. Whereas an attitude signal is a bit hit and miss. Ofcourse in "signal #356", you could be a victim of the Bath Coup by giving a count signal.
This gets me round to thinking that we should be playing attitude unless partner leads Ace when the signal reverts to count. This is the opposite to what many people play. Of course it should revert to suit preference in situations where count or attitude is obviously inappropriate. e.g. singleton in dummy against a suit contact after Ace lead.

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ing) tr. v. - Any bid made by bridge player with which partner disagrees.
South North
1♠ 2♥
2♠ 3♦
3NT pass