Share 'eChalk2.0 - another walled garden?'

Thanks Mike, Russel and others for kicking eChalk2.0 off. But okay - so call me a party pooper if you like, but I like to keep my critical thinking hat on when we venture into the unknown. There are questions that need to be asked. I have joined in other Nings and found Classroom2.0 the most engaging and varied in it's user community. However, what irritated me most is that the dialogue, as goo…