Share link icon in Facebook

The title, image, and description for Like's, Comments, and other social functions that go into a user's wall are specified with Open Graph tags. You can set defaults for your site (to ensure your logo is used for the image, for instance) by going to the Social -> Open Graph area of JFBConnect. In the big 'defaults' box, enter:
image=http://site.com/logo.jpg
title=Site Title
description=Good general description for any content on your site.

Then, on any individual pages, you can add the following tags to override the above and use specific information for that page:
{SCOpenGraph image=http://site.com/best-image-for-page.jpg}
{SCOpenGraph title=Best Title}
{SCOpenGraph description=Best description for the page}

Once added, you can check what Facebook will see using the tool on the following page. It may take 2 or 3 days for Facebook to use the new information when you Like the content though:
developers.facebook.com/tools/debug

Good luck,
Alex