Just read a few posts on various blogs about the brainstorming website @ ubuntu .com, and there are some really good ideas there.

That being said i threw in my two pence: Basically something like windows live but with already existing gtk or linux tools. so that from one application you can connect to a blog service, check your email, look at your calendar and/or indeed connect to a calendar service like google calendar... read RSS feeds and maybe integration with social networks as well.

Well that's what i thought it's apparently not a very good idea as it's being voted down rather quickly.