I really agree with your points made. Changing the nature of this is a valid argument. But it's really not a big deal, because as you said this topic will be evolving and changing more than anything else. Personally I have experienced the same happenings where there is an enormous power evolving from the group, which is really a group and not a crowd. Also I like this because it centers the people contributing - the group and not the organisation, person whoever sourcing the crowd. It is essentially about this, because the process itself is enriching for everyone participating. Although I usually don't care too much about semantics, this one is an important one. :)