Confusion in the Cloud

I've been trying to get my head around the suite of web applications offered by Microsoft and Google and it's not easy.  This may be partly due to my simple brain but after several hours of looking at their competing offerings, I'm still not entirely clear how, for example, Microsoft's Office Live, Live Mesh and Business Productivity Online Standard Suite (BPOS) work together/overlap etc.  BPOS looks interesting and I will be playing with it later in the month but the pricing scheme is not obvious - what's the difference between "Office SharePoint Online Standard" and "Sharepoint Online Deskless Worker"?  Microsoft do have that information on their website but it needs some deciphering.  Google's suite of services are also confusing - for example, what's the difference between Google Sites and Apps?

Anyway, my point, for what it's worth, is that if these corporations expect small companies with little time, money, expertise or interest to start working in the cloud then they'd better come up with some less confusing and more transparent propositions.