There are 2 types of Twitter uploads:

User Twitter: The user logs in and sends the photo to their own account

Client Twitter: All photos go to a predefined Twitter account in the background without the user having to log in

1.       Enable User Twitter

Check this to allow users to log in to the own Twitter accounts to upload.

2.       Enable Client Twitter

Check this and Login to a Twitter account that all photos will be uploaded to.

3.       Current Account

This is the current logged in Twitter account for Client Twitter.

4.       Message

Enter the message that will accompany the photo.

Note: Twitter allows 140 characters, but 25 of them are reserved for the link to the uploaded photo.