What a Tool!
ZOHO Notebook is definitely a good idea to share your contents on the web. It’s almost a website building service if you know how to manage all your stuff and a bit of knowledge (Embedded codes, Url, Rss links etc.).
You can build how many Notebooks you want. Showing your portfolio as a designer and be able to share it with collaborators or contacts is a great possibility for example, working on the same document is another one; well, it depends really on your ability to find ideas that suits your needs. But the tools are there. Waiting for your imagination…
Check one of mine: