As part of the global relaunch branding social media exercise of my new training venture, I have revisited Netvibes, a “Personalized Content Aggregation Service” (PCAS for short, as you can never have enough acronyms). Just for balance, there are others on offer, such as iGoogle and Pageflakes.
I must say that I have been mightily impressed. I've always used it as a news feed reeder but now the customisation options are rather awesome; you can create different tabs, install different themes, alter the layouts (by clicking on the tab) and install a panoply of widgets.
You can also have a public-facing page: I've created one as an example, with a tab of the Top 5 ZDNet bloggers for good measure (but who is the Mystery Number 1?)!
I can see it becoming an increasingly useful tool for publishing and sharing rapidly changing sites and feeds that would be just too awkward with your own site.