Netvibes is about having Web the way you want it. With Netvibes you can get all your Web sites, blogs, news, weather, maps, address books, to do lists, email accounts, social networks, radio stations, search engines, instant messengers, video and photo networks, all of your favorite things in one place and share them with your friends.
It has a lot of options to customize your homepage by way of widgets. That's about all.
Takes a while to load each time. Widgets don't work very smoothly. In order to use a widget you put it on your home page. You then click on a link on your widget. then you have to click another link to get to your page from the widget. Too many clicks. No way to sort bookmarks. Once you add them you are stuck with the position you originally put them in. Plain and pretty lame looking "custom pages".
It is a good concept but not implemented very well. Says it is very customizable but not very much thought put into this "customization". Still need alot of work.