Smashing Magazine has released a free Facebook GUI PSD Kit, designed by SurgeWorks. The main idea behind the kit is to speed up the prototyping of Facebook application UIs and Facebook fan pages, thus sparing you from drawing all the comps and letting you customize all the texts, buttons and data as you need. The kit is free to use in all projects, without any restrictions.
The kit brings the Facebook vector icon and logo. Also, since the focus of this resource are the UI elements, it brings a main window with the header, menu and the chat window for you to set up your realistic mock-ups. Plus all the modal components, comment boxes, buttons, message boxes, tabs, etc. All the components are full layered, built using vectors and blending options, so that scaling and editing the objects will not be a problem.
The theme is released under Creative Commons. You can use it for all your projects for free and without any restrictions. Please link to this article if you want to spread the word. You may modify the kit as you wish.
Download the set for free!