How to optimize my website based on joomla for better results with search engines especially google ? waiting for your Tips
One thing I've noticed with Joomla is that it can be an absolute nightmare trying to get individual meta page titles, depending on which version you're running. The main thing I'd suggest is to identify your keywords first, then make sure you've got a good few instances of those keywords on each page - including in those meta titles. After that, get linkbuilding!
Install sh404sef and play with it. It does take all the cons off joomla and help you optimize it. Read the SEO sections of the documents wiki in joomla.org to get more links to your site use http://www.squidoo.com/dofollow
Have they fixed the compatability problems between sh404sef and Community Builder? Last I knew the log-on was foobar'd if you ran both extensions. Really too bad, since they offered a pretty much out of the box solution for a whole lot of things.