Is social media worthless for advertising?

My latest discussion on the web was about traffic.
Is traffic from Search Engine the same from Social Media websites?
Many people are aware that traffic from Social Media Websites is bad for Google Adsense, which may (probably) lead to Smart Pricing.

I completely agree, let me explain why.
Search Engine traffic is very targeted. The visitor searching for "Buy Ipod" is ready to buy Ipod and then the click will convert well and you'll get a high CPC.

With Social Media traffic, Google Adsense can't know if the user is really searching for Ipod or just arrived because he's just surfing the Internet!
Thus Adsense will smart price your ads.

Nevertheless Social Media traffic can bring a very targeted traffic. But it's always recommanded not to install Google adsense on a website which is 80% traffic based on Social Media.

So is Social Media Traffic useless?
No! Here are reasons why you should start with Social Traffic.

• With Social Media Traffic you can build a long subscriber list, you can get many followers... which increase your popularity
• Thus, you can use affiliate ads or sponsored posts
• You can exchange links with your network friends, which will increase your search engine ranking.

Finally a Social Media Traffic is good for Blog Startup to bring both fame and readers.