According to the Pew Center: "Among adults younger than age 30, as many saw news on a social networking site the previous day (33%) as saw any television news (34%), with just 13% having read a newspaper either in print or digital form". Other groups aren't as far along but show the same trend.
The site now provides "posters" at the end of each article that are sized to be posted on Facebook or tweeted, along with links to make that easier. You may also copy the images and spread them anyway you want. The main PoliticsDebunked.com page has been updated with posters for existing articles and those "coming soon".
The only way the government will ever change is if those who wish to see change spread the word virally. If you don't take part in the process, then don't complain after the next election or major new law change. Perhaps information on this site is nothing new to you and your friends.. but it may be to friends of friends. The only way to reach the public is if *you* help do the work to spread the word via email (still the most viral media), social networking sites (posting on your own page, and on group pages or asking the owners to post to group pages), posts on blogs, letters to the editor, emails to talk shows an columnists, etc.
The general sharing links let you get to any sites that are missed. Better integration for some like Google+ are considered as time permits. If the lack of a Facebook "like" button seems odd, its partly because the "share" and "send" buttons on Facebook are more viral (especially if you share things directly on the page of friends).
Its also because the Facebook "like" button won't work with the site even though oddly other Facebook methods do. It appears likely to be due to a censorship campaign on the part of those who didn't like some content posted to Facebook . CNET reported before that some partisans have taken to seeking out any political content they don't like to label it as "spam". They'll go to facebook groups of their opponents and label anything they disagree with as spam even when its non-commercial content relevant to the topic and with the same political leanings the group was intended for. . People reported having PoliticsDebunked.com content labeled as "spam". Its necessary to risk posting even to groups that may not always agree with the content to get other voices heard, risking closed minded censors.
There wasn't a like button on the site at first, and adding one didn't work, it gives an error claiming PoliticsDebunked.com is a "suspicious URL". Alternatively there are reports on the net that a Facebook bug may also be causing that error for some sites, research is ongoing. This site is new, so after more people share its content another test will be done in case that helped.
Note: when the site was first launched recently there was a glitch. At some point Google's web creation and blogging tools didn't play well together and the PoliticsDebunked.com main website links were going to the blog for some people, notably many from Facebook. They worked for the site author so it wasn't noticed right away. This has been fixed, so please tell others who may not have seen the main site to go take a look. Or to look again if they haven't seen the new site :-)