I'm with you skinny monkey - I find my class fun, a pleasure to go to and a great source of inspiration, and I think the clapping is a good thing.
I'm really lucky our consultant is fantastic, like some of the others mentioned, she doesnt mention how much of a gain, just that its a gain and says "(name) is on a fabulous Xstone Xlbs" and takes time to speak to them if necessary.
I have only been going since August but I have stayed to class every week bar 1 (where I had a prior engagement).
We have a raffle, slimmer of the week basket, and its great for new members to get tips and hints - its ok having the books but the real sources of knowledge are the people who stay to class and share this information.
I say - clap away!