Facebook Like Button - XFBML or Iframe

[hfranz]

Which facebook like button code is better for seo.

iframe or XFBML

[CodyWheeler]

Someone please correct me if I'm wrong, but I would say this is something that's extremely low on the ranking factors totem pole.

Ref new 2011 Search Engine Ranking Factors (love this report!!) - http://www.seomoz.org/article/search-ranking-factors#overview

However, something that is high is the number of shares you get, likes you get, interactions with your facebook page that you get, so whichever method agrees more with the browsers your visitors are using, the software you are using to run your site, etc - would be my recommendation.