Are you shooting mobile? Than Pixendr will be the mobile app for you! We are currently developing and starting December we will be looking for enthusiast beta testers.
What is Pixendr doing?
-select pictures from your camera roll & iCloud
-add keywords (keyword suggestion tool included!)
-upload picture to Pixendr service and distribute them in your account at your regular agencies (all major players included)
-submit all your existing portfolio with a single click to new added agencies
-sales overview

We are currently developing iOS app, Android and Photoshop/Lightroom plugin will follow. It would be great to have some feedback from you about next steps. What is more important for you as new features:
-support for uploading pictures from Dropbox/other online storage services
-easy model release management
-shooting ideas (keyword trends, agencies requests)
-tablet optimized workflow
-something else