Do Facebook/G+ likes/shares affect SEO?

Here is a proof showing the impact of social signals in ranking. Social Media & Ranking In Search Results

yes social media affects seo..

G+ is the most useful for SEO point of view..

I have seen no evidence (just because it is stated on Search Engine Land doesn't mean it is true), that "social signals" help rankings unless that "signal" results in a backlink that the search engines can index.

Sure, it may get you traffic, traffic that then gives you a link. But on it's own I do not believe Tweets, Likes, Plus's and whathaveyous help in the rankings game.

I am actually surprised that article was on Search Engine Land (maybe it's old?)

Social Signals on their own definitely do not directly influence search engine rankings.

I really shares every post of my blog with twitter . G+ , and FB

I hope it helps me to rank my site

I'm not an expert on seo rankings but I think there are some obvious things to consider right away:

1. What can the search engines actually index? Google doesn't have access to most of the Facebook data because it's hidden behind their privacy walls so obviously they can't take the majority of that information into account for rankings, only public data would have a possibility of showing

2. There's a possibility they would include links posted on public social pages in their rankings, it certainly seems logical to try to account for social signals over time meaning if they aren't accounting for it at all right now it seems likely that they will be moving in that direction

3. Google+ seems like a source they'd consider more than others simply because they have access to all the data, how they would weight it or rank it are another question entirely, but if they aren't accounting for Google+ data I'd be very surprised if they didn't start soon as I understand it Google Places already accounts for some of these factors such as reviews.

They are effective

I agree it doesn't seem to do much. I think you should have Google+ authorship/publisher installed no matter what, however.

Although I am not sure about it but my point is that if social media can help in link building then why It can't be helpful in SEO?

I'm yet to see a site that has ranked purely on social signals. Social signals are very manipulative and google would be stupid to consider them as a ranking factor as of now. any tom dick and harry can buy thousands of likes, shares, tweets for $5 via fiverr!

Yeah, here goes some blackhat myth again.

Keep sharing and liking and hope you get on page 1.

Al I can attest to is, we have ranked site without a single social signal or whatever it's called.

There's a connection between links and social signals.

I have seen some pattern that if you get 100 tweets, you'll get at least 4-5 links as well.
Maybe it's just in some niches, but I have seen this pattern quite often.

So instead of building links all day long, I would suggest to outreach "tweetaddicts" (people who like to tweet a lot good stuff in specific niche). They usually have a lot followers who also have niche related sites.

why not ? it surely affects SEO ,The more u have ,more juice will come ,juice=traffic