At Niconico.com, you will be able to share videos from Youtube, Dailymotion and Niconico Douga without any hassle.
Here's how you do it
1. Click on the "Share Videos" button located on the top right of the front page
2. Enter your favorite video's URL in the pop-up box
3. Click on "Share" and the video will be instantly shared on Niconico
We will be adding more features in the beta stage and eventually you will be able to upload your own videos directly to Niconico.com.