Hi if you want to create more popular site using wordpress you need language change chance for them. So its give you more keywords in more languages. I find great translate plugin and widget for wordpress. This plugin have translate your page in 11 languages. German, France, Russian, Spain and other more languages. When you set up this plugin its shows 11 flags into your widget like picture bellow:

Of course into setting panel you can mark that languages what you need. You don't need use all of them.

About installation:

1. Download the Language Translator Plugin (click on download button bottom of post).
   
2. Unzip the plugin and upload the (translate folder and it's contents) to your /wp-content/plugins/ directory.
3. Log in to your WordPress Admin Panel, navigate to the plugins section and activate the Language Translator Plugin.
4. From the Admin Panel, navigate to Presentation -> Widgets and drag and drop the ltranslate widget into the position where you would like it to appear in your sidebar.
5. Save the changes and go to your site and use it.

Note: If you would like to place the translator outside of the sidebar, for example in your header.php, footer.php or other place into your site simply add the code <?php ltranslate(); ?> where ever you would like to call in the plugin.

Download translate plugin

URL: http://www.lancelhoff.com/wordpress-language-translator-plugin/