I stumbled upon this really simple one stop service last week and it's something I think a lot of casual media creators will find useful. It's called Traackr, and it lets you keep tabs on what's going on with the media you're sharing on the Web. You can plug in your accounts from several popular services including YouTube, Flickr, MySpace, and Dailymotion, and then have the service track usage for each using handy charts and indicators. Think of it as Google Analytics for Web sites you don't own.
To see how you stack up against others, Traackr compares your daily numbers to others on the service and gives you a buzz and popularity rating out of 100. Each users profile page is simply a place for people to list a little information about themselves. Traackr also does some of the heavy lifting and shows the most recent and most popular content from each service in little widgets below whatever information you've listed. That's about as far as the community portion goes though, there's no way to befriend other Traackr users or send them a private message.
All the content you want to track on Traackr is mashed together, but power users can compare certain groupings of content with others by creating "campaigns." Unlike advertising campaigns these are the equivalent of folders, allowing you to mix things such as videos, music, photos, and blog posts together into single containers. You can then compare campaigns with one another and see which ones are performing the best.
I would love to see something like this make its a way to Google Analytics. For those who haven't used Analytics, it's a wonderful way to dig through a lot of information very quickly. In this case viewing all that information in one spot is far easier than jumping from site to site to check out what people are looking at.