Most of the plugins that are out there modifies the HTML and changes the URL to be prefixed with http://redirect.alexa.com/redirect? . Although simple, this has a disadvantage. It may affect Search engine indexing a the HTML links are crawled by the Google bots and other search-engines.
The alternative would be to use a Javascript that catches the click on a 
hyperlink on your site and then prefix it with the Alexa Redirect URL.
Here is an example – you have a link on your blog like http://www.myblog.com/recent/ , but when the user clicks on it, it will transform into http://redirect.alexa.com/redirect?http://www.myblog.com/recent. At the same time, when a Search-Engine bot like Google visits your page it will not trigger the JavaScript event, because they are not JavaScript-aware.
Installation:
- Download the Better “Alexa Redirect” WordPress Plugin
(wp-alexa-redirect-0.3.zip 3.0 KB) - Upload Better “Alexa Redirect” WordPress Plugin to your WordPress plugins folder
- Activate the Better “Alexa Redirect” WordPress Plugin
- You are Done!
Plugin : The ‘better’ Alexa redirect plugin for Wordpress
By Kaloyan K. Tsvetkov.
[...] unknown wrote an interesting post today!.Here’s a quick excerptMost of the plugins that are out there modifies the HTML and changes the URL to be prefixed with http://redirect.alexa.com/redirect? . Although simple, this has a disadvantage. It may affect Search engine indexing a the HTML links are … [...]