The ghosts of Twitter's past continue to haunt Donald Trump.
The most retweeted post during the first presidential debate was of Trump claiming global warming was "created by and for the Chinese in order to make U.S. manufacturing non-competitive."
Trump fired off that tweet four years ago when President Obama won his second term in 2012. It found relevancy again when Hillary Clinton accused Trump of denying climate change, and he claimed she was lying. Tens of thousands of people swarmed onto that tweet to show the Republican nominee had contradicted himself.
One of the most fascinating aspects of this year's election is the way Trump's real-life scenarios clash with his Twitter track record. It's helped that despite the constant mining for contradictions, Trump has kept a majority of his 33,000 tweets, dating all the way back to his first post in 2009.
The strategy directly contradicts what teens learn in high school from their college applications: Clean your social media history. The advice also goes for job applicants, as employers tend to comb through social media accounts of potential hires to search for any red flags.
In Trump's case, there's a rich field of material that has come back to bite him. When he came in second place in an Iowa caucus -- losing to Ted Cruz -- retweets for Trump's "No one remembers who came in second place" quote from 2013 and 2014 surged back onto the Twitter feed.
Even something minuscule, like a photo of Trump drinking a Diet Coke in May, led to more than 60,000 retweets on a 2012 tweet, where the Republican nominee wrote, "I have never seen a thin person drinking Diet Coke."
Trump's campaign did not respond to requests for comment.
Jobvite's 2016 Recruiter Nation Survey, released Tuesday, pointed out that job recruiters detest typos, oversharing and photos of alcoholic consumption. While Trump lives alcohol-free, he's certainly not typo-free.
On Politiwoops, Sunlight Foundation's tracker for politician's deleted tweets, you'll find a graveyard for Trump's typos, including when he tweeted about NBA star Dwyane Wade's cousin's death in Chicago. He deleted the post and replaced it after three hours because he spelled the basketball player's name wrong.
Florida Sen. Marco Rubio, a fierce political rival to Trump during the Republican primaries, also zeroed in on the candidate's Twitter typos, mocking him for misspelling choker (as chocker) and honor (as honer).
And those are just the ones Trump does delete. Some typos are still online, like when he spells Phoenix, Arizona as "Phoneix" or shocker as "shoker."
And as far as oversharing, Trump has been known to go on unexpected Twitter rants during this election campaign.
In his most recent outburst on Friday, Trump told his followers to "check out" a sex tape of former Miss Universe Alicia Machado after she aligned with Clinton, kicking off the Twitter tirade as early as 12:20 a.m. PT. Nearly 12 hours later, he was still going, defending his actions and why he was tweeting at night owl hours.
The subjects of his social media scorn have included The New York Times, Katy Perry and of course, his "haters and losers."
Trump's Twitter habits have even become an attack point for Clinton's campaign, with the Democratic nominee calling out Trump on multiple occasions for his social media history.
"So a man who can be provoked by a tweet should not have his fingers anywhere near the nuclear codes," Clinton said during the first presidential debate.
Clinton echoed a similar sentiment during her acceptance speech at the Democratic National Convention. It was the most tweeted moment of her speech.
But deleting old tweets can be a tricky move for Trump. Even a false report of Trump deleting that 2012 global warming tweet during the Monday debate amassed more than 37,000 retweets before it was debunked.