Tutorial
Copy the following link format url for Twitter. This can be added to the social bookmark function to include Twitter.
http://twitter.com/intent/tweet?url=|url|&text=|title|
Social Bookmarks
The social bookmark are managed under Social Networking Social Bookmarks
Add Social Bookmark
Click on the button
Select Bookmark
Choose Twitter from the drop down menu.
Link
Paste the Twitter link (found above).
Styling
An image can be uploaded or the enter hexadecimal colors for the automatically created text icon.
Save
Click on the button