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Twitter Highlight
Highlights tweets that are to you in your timeline (i.e. tweets that start with @your_username).
What does this script do?
When replying to a tweet in Twitter you use the @username notation to specify who the tweet is meant for (see more on the Twitter help). This script will highlight any of the tweets displayed on the Twitter web site that are replies to you making it easier to pick these out over the other general tweets from the people you are following.
The basis for this script came from the Twitter Powertoys script by Manuel Gonzalez Noriega
Installation

Installation
- Install Greasemonkey if you haven't already. Greasemonkey requires Firefox.
- Install Twitter Highlight.

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Version 0.3 of the script has now been uploaded which fixes the script based on the recent Twitter web interface updates.
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Version 0.2 of the script has now been uploaded which fixes the script based on the new Twitter web interface.