New users can chose from two account types, one that costs and one that is free. You can easily link up your Vimeo account to your Facebook account. Making the site user friendly and exciting all at the same time!
Alma from Rodrigo Blaas on Vimeo.
As a sharing site Vimeo increases the visibility of many different groups. There are 'communities' for artists, not for profits and on and on. Its application for business and entertainment. Use it to launch a new artist or search for new talent!!
This is a global community dedicated to sharing, though not necessarily a game changer Vimeo does provide a forum, similar to youtube in its sharing capacity but dissimilar in the content and overall goal of the people involved.
Now that you have a better understanding of Vimeo's Usability and Utility to go Jordana's Blog to see her critique of the Community itself. After all, sites like this are built on their community and can only survive if they are able to maintain a viable user base.