marketing: redirecting Facebook or Twitter clients to my site

I apologize if this is not the right place to ask this question (close if necessary)

I have my Facebook page for my website for which I am doing my advertising. I want to have different coupons for different campaigns (for example, a Christmas campaign) and redirect them to my site.

My question: is it good to redirect users to a personalized landing page on my site?
for example: http://mysite.com/facebookad and display different content or should I simply http://mysite.com/?ref=facebookad and keep the same content?

I'm new to marketing, so I'm not sure who to ask.