Ticker
Here is the OH tutorial http://obesityhelp.com/content/howtoaddaticker.html
You go to a site like tickerfactory.com and create a ticker. They will show you a picture of what you have created. Copy (Ctrl C or right click copy) the actual picture of the ticker (not the html code) directly from tickerfactory and come back to this site and paste (Ctrl V or right click paste) it in the section under User Settings (left side of the screen, above the ads) and it will appear as a signature be sure to click on "enable signature" and save.
Hope this helps,
~Michelle
OH Member Services