Hiring Through Social Media - Can hiring cost be minimised by using social media?

Dear Professionals, I am a training consultant with an IT company.
I need to deliver a session to group of 20 recruiters on \"How can talent be hired using social media\"?
I am seeking your guidance to conduct this program.
Under this I want to cover few points..
1). Objectives
2). Names of Different platform can be used as social media?
3). How to use those platform?
4).Importance of social media?
5). Can hiring cost be minimised by using social media?
Kindly add if you have some additional thoughts.

First thoughts - depends upon the positions / domains you recruit for. Also on the strength of your network as a first point of contact as well as referrals. Any social network has to be nurtured. Which is why job portals are not going away any time soon.
I have a poll precisely on this subject at :
Effectiveness of Job Ads on "Social Media " like LinkedIn, FaceBook, Twitter etc.
With some interesting data so far. All are requested to participate / share.
Thanks

Hi Aakriti /Others on this thread
Requesting all again to please participate as well as circulate the link to your contacts so as to make this a reliable survey.
As of now , almost 50 % of the respondents say the have NEVER applied to any job via any social Media websites...... wonder what this says about their efficacy...If any here has access to some other data on the same subject, please do share !
The link is :
http://mytopjob.in/r/poll
And the latest snap on one question is hereunder...for your own evaluation and conclusions.
I'll be grateful for all participation.
attribution https://www.citehr.com/499164-social...#ixzz39aFuBQoV

Dear Cite Hr members,
Kindly help me understanding below terms. I have googled it many times but still want to know more with examples.
I am unable to start new post, so continuing with last post. These questions are realted to learning & development.
What is the difference between "Design" & "Development"?
What is the difference between "Content Design" & "Instructional Design"?
Who can be the "Instructional designer" & "Content developer"?
What is the difference between "Curriculum" & "Roster"?
Who can be a proof reader?
What is copy right? And how it can be done?
What is proposal writing?
What is coaching & mentoring?
What the grow model?
What are the difference between behavioural & soft skills training?
What is "Knowledge Management" & "Content Management" & "Informanagement" ?
Regards,
Aakrati Gupta

Hi Akriti,
Have you received answers for your previous post? if not do let me know , i would be happy to answer few of your questions