You can use this extension in order to show your latest or most commented posts from your WordPress website, as long as it is located in the same server as your Joomla's.
Of course, it requires the right Database Credentials (DB Name, DB Username, DB Password and DB Host) otherwise you will only get an error message.
* Show/Hide Posts Titles
* Show/Hide Some Introtext
* Show/Hide "Read More" text
* Specify WordPress Category ID(s)
* Order by latest, modified, most commented or by title
For Joomla 2.5 and 3.+:
1.2.4: Supporting woocommerce products
1.2.3: New option to specify Post Tag ID(s).
1.2.1: Show/Hide the post date.
1.2.0: Creating thumbs rather than displaying the original images. (This option requires your server to have URL file-access enabled).
1.1.0 : Possibility to show the first found image.