Hi Folks,
There I marked now a days million of users from facebook, so how does it’s possible all users are true and they are convert from leads. Why I’m asking? because you must know there are 30-35% fake user 
I think that I understand what you want to say… but if you rephrase it, I’ll be sure that I have the right meaning. Please? 
Do you mean how can you determine if facebook traffic is good traffic? Well the only reason that the traffic would be bad or “fake” would be if you’re buying it. If oyu’re buying facebook leads I would of course be skeptical of “fake” traffic. Otherwise I would think the traffic is as quality as the person behind it.
If your goal is traffic and you’re not offering exciting content [i.e. videos, news, etc] then you’re taking the wrong approach.
People go to Facebook and other social networks to connect with their friends, peers and interest groups, not to rush off to your site. The opportunity is around on-site engagement, sharing, and empowering customers to share their experience and build you up. While advertising can get people off the site to a degree, even that does much better when focused on site. Tailor your objective to the medium.
A lot of people use Facebook for games and apps, and even create accounts just to give certain perks to their main accounts on certain games. Yes, there are a lot of people using Facebook, but if you want real leads, you should be a lot more interesting and you should genuinely interact with the people who are interested in your niche by joining groups.
Facebook is very useful for increasing traffic. Because it has a lot users and can make lots of viewers to our sites. No matter the user is fake or real, its upon our intercaction between our friends and how interesting that we can make our looks.