The current Facebook best practice recommends adding FB JS SDK separately to the page <body> and then having a Facebook Like Box rendered via JS insteadf of <iframe>:
http://developers.facebook.com/docs/reference/plugins/like-box/
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Are there currently any Plone add-ons for adding Facebook Like box or other Facebook functionality to Plone following these best practices?
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If not what would be the best way to accomplish the functionality – static text portlet is not probably a way to go due to safe HTML transformations
I believe that http://plone.org/products/simplesocial does all or most of what you want. Contributions welcome!