finally I found what I was looking for, a simple was to get the Google+1 Button working on my site. All worked as promised, but then I found out that it kills my RSS Feeds :(
You will be happy to know that we have just released a new version (v1.10) that addresses this issue. Now, Joomla's core RSS feed is excluded from the Nice Google +1 button creation process. In addition, we have added a URL exclusion field in the plugin parameters. This new paramter allows you to add URLs that you would like to exclude from the button creation process. This is helpful when using other developer's extensions, where a Google +1 button is not desirable.