This add-on is intended for users who speak and write LTR languages such as Arabic, Persian and Hebrew in order to view twitter from right-to-left. In addition this add-on will translate the different aspects of twitter.com into the selected language (currently only Arabic is supported).
English tweets will display left-to-right while Arabic tweets will be displayed right-to-left in order for them to be displayed correctly.
Please provide any suggestions or issues with this add-on in the comments. You can also follow me on twitter: www.twitter.com/khr2003