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An overview of ZT Autolinks key FEATURES
Compatibility: Joomla 1.5 and Joomla 1.7 (comming soon)
Internal link: allow you make link to all installed components: com_k2, com_content, com_virtuemart, com_contact, com_rsform...
External link
Can set nofollow attribute and open links in new window
Can set redirect or not: It is a perfect solution to get your blog posts interlinked or add affiliate links to other sites
Limit of maximum number of generated links in one article (or 0 - any occurrence of keyword will be converted to link)
Occurence - first occurrence of keyword, last occurrence or random
Can set priority for your keywords
Can set limit the total number of keyword displayed to
Build in color tool which allows you to set color link
Custom css for keyword link
Unlimited extensions supported: K2, Virtuemart, Sobi2, Sobi Pro, JComment, Jseblod, Hot Property, JomSocial, Community Builder, Kunena....
Allows you to export to .csv and import the keywords from .csv file
Easy to manage with back-end management
Lightweight, modern and fast-loading design
Customize User CSS formatting
Easy and friendly administratio
W3C XHTML 1.0 Transitional. W3C CSS Valid
Fully compatible IE7+, Firefox 2+, Flock 0.7+, Netscape, Safari, Opera 9.5

Compatibility:

Demo: http://extensions.joomla.org/extensions/site-management/automatic-links/18367