Is Facebook like or share better for SEO (social media buttons)

[McTaggart]

Just wondering whether anybody has experience with this? If Googlebot is able to analyse Facebook activity that is (I'm not entirely sure whether it is...)

[DonnaDuncan]

Google does measure social activity so your question is a good one.

I personally prefer shares versus likes.  I'm going to quote Mari Smith, as she best explains the difference between the two.  "Note the Facebook Like Button now functions (almost) the same as the Facebook Share Button. The big difference is there isn’t an obvious place to write your own narrative before posting to Facebook, plus you cannot select the thumbnail. Clicking the Facebook Like Button automatically pushes the full story into your personal Profile stream. So, you may wish to add the Facebook Share Button with Counter to your registration page instead."

So from a SEO perspective they're equivalent. From a useability and conversion perspective, I would think share would be better.

[EugeneF]

I always go for the "like".

The more "likes" you have, the more potential future interactions you can have with your customers.  This is what creates the "shares".