Use built-in sharing introduced in Mac OS X 10.8 Mountain Lion directly from Alfred!
This workflow is using the amazing command line terminal-share
You can call directly share command (or use a hotkey) if you just want to share a message. If you want to share a file (image, video or any other kind), you can select it using a File Action, or set a hotkey.
It currently supports all services except sinaweibo,youku and tudou (I can add them in a future release).
Based on the type of the selected file, services proposed will change.
Here are some examples:
Download the workflow below and open in Alfred.