Microsoft Office Live is of course Microsoft's online port of it's office suite to the web. They are currently offering the packages free for you to try while it's in beta though interestingly, once it launches they will be charging a subscription fee of $30 a month.
This will be interesting to see given how much of the web, especially the Web 2.0 offers are free. Some of them offer paid add-ons but most of them are running an advertising based business model and given the amount of them that are new start-ups but tech geeks who are doing it for the technology rather than the business, many of them don't have business models at all.
Of course when it comes to targetting businesses rather than individuals or webmasters, you have much more scope for charging for products. It's worth noting that Microsoft are offering a "Basics" package that will be free after beta which they will most likely use for individuals while their full blown packages will bring in the money from the businesses.
That said, whether they are interested in attractiving individuals at all is in question. After all, why would an individual need a web based office suite given most individuals only have one computer. Sure, you can also access your stuff at cybercafes and such but how many people are going to do that? The main use is going to be business and that is the angle Microsoft are pushing - the tour talks about small business with little regard for anything else.
If you think it will be of use, you can sign up for any of the packages for free during beta on
Microsoft.com. So far though, it's not looking particuarly useful for most of us.