For law enforcement officials intent on using playful Facebook posts to shake off negative perceptions of police, it's been a "Like"-able year.

"We meant it as something to show the lighthearted side of police officers, that police officers like to have fun, too" says Dover (Delaware) Police Department Public Affairs Officers Mark Hoffman, the mastermind behind the department's "Shake It Off" video that went viral in January.

In February, blogs were buzzing about the arrest warrant for Elsa the Ice Queen issued via Facebook by the Harlan, Ky. police department during that month's record-breaking cold snap. 

But with tactics ranging from the facetious to the fictitious, actually using social media to enforce the law can be just as interesting.

In February, the Crewe, Virginia Police Department made headlines for posting a lost and found ad for a bag of cocaine discovered inside a local dollar store. 

A Justice Department guide for social media use published in 2013 actually encourages police officers to friend criminals on Facebook with fake profiles in order to keep tabs on their location and activities. 

But for police, the simplest function of Facebook may be the most effective.  

The Montour County, Pennsylvania Sherrif's office has been using the social networking site to crowdsource justice by posting the names and photos of people with arrest warrants for more than a year, but a series of posts last week hit home just how effective the practice can be.

Of the seven people whose information dates of birth, last known addresses and driver's license photos were posted on the department's Facebook page, two were apprehended within 48 hours.

According to Deputy Sheriff William McKenna and administrative assistant Danielle Parker, who manage the department's social media accounts, 18,789 people — a few hundred more than actually live in the department's jurisdiction — viewed the April 22 post within 48 hours. Nearly 6,000 people shared it or "liked" it.

“That’s pretty amazing considering the population of Montour County,” Sheriff Ray Gerringer said. 

McKenna said the department's Facebook page activity was up a whopping 81,000 percent in that same 48-hour time period. And they're not taking the response for granted. 

"Update: Colton Koser and Josh Rogers have been located and picked up," reads department's April 23rd status update. "Thank you to the community for being proactive and aiding us." 

The (Sunbury, Pa.) Daily Item contributed to this story.