One of the best SEF components for Joomla.Its very easy to install and use, in just 5 minutes youare going to have a seo friendly website. It has already installed plugins for: VirtueMart (http://www.virtuemart.net/)FireBoard (http://www.bestofjoomla.com/)DocMan (http://www.mambodocman.com/)Community Builder (http://www.joomlapolis.com/)iJoomla Magazine (http://www.iJoomla.com/aff/idevaffiliate.php?id=317_1_3_9)It can also use sef_ext files for OpenSEf and SEF Advanced. Joomfish compatible (translate URL or not, insert lang. code), dual cache system for high speed and very small DB queries overhead, SSL switch, automatic 301 redirection from non-sef to sef and from Joomla SEF to sh404SEF, insert Google news style numerical ID,