Web 2.0 Tools

The tools that Web 2.0 can be great however the piece which still frustrates me is that they are not all seamlessly in on place. It is bothersome to have to go in and out of various accounts in order to accomplish a task. It is great to be able to access these files and tools from anywhere via the web but I have to keep track of various accounts and log-ins currently. I look forward to the day when Web 2.5 can bring bring all of these different tools that exist on the cloud under one roof so that my work on them is more integrated.