Wpvote  Like Box widget  for WordPress is a social plugin that enables Facebook Page  owners to attract and gain Likes from their own website. The Like Box enables users to:

• See how many users already like this Page, and which of their friends like it too
• Read recent posts from the Page
• Like the Page with one click, without needing to visit the Page
• No api key or application  id, just url to you facebook fan or ap page.