With URLy v0.9.3 you have now a second choice for sharing local images. Select Imageshack in the preferences and send images to URLy: It will automatically be uploaded to Imageshack and you can share the URL of the image in other apps, without having to send the image itself. If you enter your Imageshack user credentials, the images will automatically be added to you Imageshack user account.
Optionally, you can also also select an option to receive a Yfrog URL instead of the Imageshack URL.
The upload to Imageshack is still experimental. If you experience any problems please let me know.