Hi - we are looking at developing a web application that allows users (some subscribed (authenticated) and some not (browsing)). We would like some basic document management, a wiki, a blog etc. and do not expect the app to be heavily used (DB size not an issue at this stage). I require the GUI to be customised to our corporate style and we access to .net development skills which we would like to leverage to develop the application. With this in mind I have the follwoing 3 questions:

1. Is WSS 3.0 / SPF 2010 the correct framework to be building this app on?
2. What are the licensing terms or are these frameworks similar to the .Net framework that once installed on our host server we can use the base services provided to develop our apps on?

I hope this makes sense & thanks in advance for any responses.