By the way, I found a possible solution in a Chrome extension.
Name is AdBlock, it is a really cool stuff and when you use it, open the abandonia.com, you can select the area which would like to block.
you can set the filters, and the second (or third) match has a unique identification for this Facebook banner:
www.abandonia.com##IFRAME[id="f16a988b34"][class="fb_ltr"][name="f330e097fc"]
when you set it, next time this banner will not shown.
but I still have friedns
