Can somebody really tell about the influence of facebook likes on Google serp?
Sounds reasonable that sites with high amount of users as (formerly fans in facebook) likes might indicate kinda autorithy, thus be considered as one of many factors to determine relevance of a search.
I've no doubt Facebook is on top of all those (not my intention to talk about twitter in this post)
So like an epidemy it's very common to see all sorts of social sharing button in mostly all websites, but most sober at least shows Twitter and Facebook buttons.
Well, if you have a facebook page for your site let's call it
facebook.com/example for your www.example.com website,
the like button in your website will cause this:
"The Like button lets a user share your content with friends on Facebook. When the user clicks the Like button on your site, a story appears in the user's friends' News Feed with a link back to your website. When your Web page represents a real-world entity, use the Open Graph protocol to specify information about the entity. If you include Open Graph tags on your Web page, your page becomes equivalent to a Facebook page. This means when a user clicks a Like button on your page, a connection is made between your page and the user. Your page will appear in the "Likes and Interests" section of the user's profile, and you have the ability to publish updates to the user. Your page will show up in same places that Facebook pages show up around the site (e.g. search), and you can target ads to people who like your content"
That demands adding different meta tags in all your pages what is a real pain if you manage a large website.
Instead the Facebook like box:
enables users to: See how many users already like this Page, and which of their friends like it too
Read recent posts from the Page
Like the Page with one click, without needing to visit the Page.
That said I personally chose the second option: The like box, If I have to put just one facebook mention in my page I prefer facebook like box, since you can gain "likes" or real people interested in your content or services contact for good, without leaving your page. And without editing every single page with annoying meta tags of open graph protocol.
But regardless my preferences, does that have different impact on Google?
I mean I can imagine they are able to know the relation between a facebook page and a website, and I imagine it might be advantage for facebook pages with many followers (fans, likes whatever you want to call it)
I'm not certain of how benefitial is the "like button" effect outside facebook itself, (in facebook itself I'd say is the spread of your content, the sharing).