RM Plugin for WordPress: Twitter Feed
Go to http://dev.twitter.com and login with your developer account.
Hover over your username (upper right) and click "My Applications".
Click "Create a new application" and enter the necessary information. For the "Callback URL", enter the URL of the website on which you will be using this plugin. NOTE: the "Callback URL" is optional and is only necessary if you plan to use callbacks.
Once your Application has been created, click on "Create my access token", at the bottom of the "Details" tab on the application's page.
At this point, you will have all of the necessary keys, secrets and tokens necessary for using this plugin.
This plugin use twitter-api-php by James Mallison
This plugin use urlize.js by Vebjorn Ljosa