"RateItAll is an online community and social network built upon one of the most extensive and diverse online databases of opinions, ratings, and reviews in the world. Participating members of RateItAll can earn ...

"RawSugar is a place to save, share and discover your favorite content in an organized and highly flexible way.

You can save and tag content (any URL) to your account in RawSugar. You can access your bookmarks any ...

"Readr brings together all your content.
Readr works with most blog, photo, and video services, from Flickr and Blogger to YouTube, Myspace, and Facebook.

Keep up with your friends.
Find out ...

"Reality Digital is a San Francisco-based company that provides software products and a hosted service platform for storing sharing, managing, and monetizing user generated content (video, photos, games, text and ...

"reddit is a source for what's new and popular on the web -- personalized for you. Your votes train a filter, so let reddit know what you liked and disliked, because you'll begin to be recommended links filt ...

"Reunion.com is the leader in keeping people in touch online. With its unique Who's Searching for You? and People Search features, Members can find and reconnect with friends, classmates, lost loves, family and ...

"We bring together artists, fans, venues, and record labels to forge relationships around the music that sustains us. Even in the age of the internet, music is still enjoyed both live and recorded, and still trav ...

"Revish is a place where people share their reading experiences. You can use Revish to keep and share a list of books you're reading, write reviews of books, find recommendations from other readers, and a whol ...

"RevolutionHealth.com is a community, where you’ll find support and insight from people who have been where you are. For example, if you or someone in your family is battling cancer, you can connect with oth ...

"Revver is..

..a video-sharing platform built the way the internet really works. We support the free and unlimited sharing of media. Our unique technology tracks and monetizes videos as they spread virally ...