Google recently dropped Wave , its revolutionary collaboration platform I wrote about last year. The general reaction is a surprise, firstly because the Wave was very innovative, though not well packaged, secondly because no longer than a few months ago Google was actively promoting Wave to business partners on the Google IO 2010. And now, they are just stopping the service, just like that. Ok, it’s not the first product they closed, but this time the ecosystem is bigger, and the consequences are higher. And an important question arise – how dependable cloud computing really is?