How can I use the same Facebook sharing strategies found on this site on my own site?

I found this site that uses a bunch of different strategies for getting people to like their site and share it on Facebook that I think is very effective.

They use several popup messages asking for likes for example and also big SHARE on facebook buttons.

How can I set up my wordpress site to use some of these same strategies and techniques?

Here's the site.

As you enter the page there are popups with prompts to like the page too.

What can you recommend to do this and more to increase Facebook sharing and integration.

Also do you suggest Google Plus1 integration techniques or should I try to do both?

Which leads to more traffic and better search engine visibility?