I have develop a new plugin that auto inserts link for keywords in article for joomla 1.5 and joomla 1.6. Why we need this plugin? When the content is upgrate continuously, the keyword we seo would be changed quickly. For example, now we seo the keyword joomla 1.6, but in short time, all article should be seo for joomla 1.7. It takes much time if we rewrite the old article. It must be a technique for us to do it quickly. JWseolink is the best solution for you. You can download it at: http://www.jw-extensions.net/jwextensions.html
we will go back into our last article we submitted and "select" some text we want to use a keyword linking text to another website. In this case we will link "ionic purifier" to another website.Click the chain link icon above the article, then in the pop-up window paste the URL you are linking to where it says Link URL. Click INSERT at the bottom of the pop-up window and then save your article, and check it live.
Maybe this article can help you out : http://www.ostraining.com/blog/joomla/automatically-link-keywords/
Thank you for your post. I mean in this is not only for advertising. It just helps us shorten the time of putting link for keywords for seo activities.