TweetCube is a straight forward Twitter app that allows you to upload and post files to your Twitter account. Log in with your Twitter user information, find and upload the image, song, video, or whatever else you want to share, and enter the message you want to add describing your post. The result is a tweet from your account with the message you’ve entered and a Twurl link that leads you to a TweetCube page with your submitted file displayed for the Twitter community to enjoy. Currently the file size is limited to 10 MB, and links expire after 30 days, but posting is completely free.