You already know that Tell-a-Friend is available for WordPress blog platform since so many of you already use it. For those who are not aware, we have provided two ways to enable Tell a Friend for the WordPress platform i.e. those who have the WordPress engine running on their own server:

• Tell-a-Friend plugin for WordPress engine – easy and hassle-free
  Just download the plugin (from the SocialTwist site or from plugins at WordPress.org), install and activate it, just like any other WordPress plugin. Easy! The plugin will attach a Tell-a-Friend button on the bottom left corner of each post in a new line.
• Tell-a-Friend WordPress snippet – for the power blogger
  Some of you would prefer to exercise greater control on the positioning of the button. For example, you may want it in the same line as some other buttons at the end of your blog posts or you may want it on the right hand side instead of the left. For such requirements, pasting the snippet at the right place in your WordPress template will do the job.

Tell-a-Friend specially for WordPress.com
We received a lot of requests from people who have their blog hosted on WordPress.com. Now, WordPress.com allows only adding HTML to the template. Javascript is not allowed. So our usual widget code can’t be embedded in it. We now have a new feature in which we embed an HTML button on the WordPress.com sidebar and have the announcements happen in another window.

Source: http://utmattress.wordpress.com/

The user sees the screen below when he clicks on the Tell-a-Friend button. He can either announce the blog or any one of the specific posts in it. Just clicking one of the posts on the left frame refreshes the widget with the contents of that post and the announcement can be made.

So all you WordPress.com users out there, this could be a really unique way to get your blog posts promoted. Try it and let us know!