Author URI: http://raduboncea.ro/about/ A light implementation of the Facebook Open Graph: I Like Button social plugin.
FB I Like Button.
You can overide the settings as per page/post by typing the following code in your post/page:
<!--fbilike--> if you wish to display the button or
<!--nofbilike--> if you wish to hide it.
Use the option Container Style and style the div around the iframe. Eg. if you want to position the button to the right write something like float:right; margin:0px;. But pay attention not to mess other elements and their position. Use clear:top,bottom, left carefully.
The default option is the iframe. XFBML was recently launched. However I recommend XFBML because is more handy, fully asynchrone and will offer more features in the future.