I don't think it will be that big a hit (in business anyway) because the cloud (if i understand the concept properly) is for sharing (pooling) the processing power and memory of many machines, and well...if you need multiple machines to have enough power to do tasks, most companys (such as video editing and CGI companys) will have farms set up (computers linked together to speed up the process), so really i don't see any point in cloud. Also after looking at a wiki of it, it's on about being able to update and access files (and share programs) from one place and while this is a good idea, again theres already software out there which allows for this.
So in conclusion in the home enviroment it will be more or less useless (unless you have at least 3-4 computers which are always on), even then the average household doesn't need to combine resources for computing power (and if you think it would be great to boost you gaming capabilites think again, you'll have to deal with lag because of the transfer, issues with working routers to hard, routers needing to restart for some reason holding up teamwork, the list of issues which can happen goes on and on), it will also slow down your networks performance with all of this new activity.
In the business enviroment? maybe for updating and sharing files in real time but otherwise i don't really see much use for it when we have existing tech which can already do what this tech offers.
In theory it's a good idea to have evenly distributed computing power and i think it will have some good effects (such as computers only used for excel and such using its spare power to help other machines) but i think it will also have some bad effects (computers needing all the power there hardware provides finding 25% of it's busy helping some other machine), it's 50/50 either way, i personally think most businesses won't bother since it will most likely be costly to set up and any company needing to share processing power more than likely have farms already set up (just look at operating systems most companies still use XP across their network, and only a few are only going over to 7 because it's exetremely costly to change over).
I don't know we'll just have to wait and see, i very much doubt i will allow my computer to share it's power since it's used for gaming.