Seven companies announced Wednesday that they will no longer advertise on Sean Hannity's nightly show on Fox News.

Cars.com, the automotive classified site, was the first to announce that it was pulling its commercials from the popular 10pm nightly talk show Hannity, which has devoted extensive airtime to a conspiracy theory surrounding a murdered Democratic Party official.

'The fact that we advertise on a particular program doesn’t mean that we agree or disagree, or support or oppose, the content,' Cars.com said Wednesday in a statement.

'We don’t have the ability to influence content at the time we make our advertising purchase. In this case, we’ve been watching closely and have recently made the decision to pull our advertising from Hannity.'

Six other advertisers followed suit, according to BuzzFeed.

They include two mattress companies, Leesa and Casper; exercise bike maker Peloton; military family insurer USAA; Crowne Plaza Hotels; and Ring, which provides outdoor home security.

Seven companies announced Wednesday that they will no longer advertise on Sean Hannity's nightly show on Fox News

Hannity has come under fire in recent weeks for actively promoting an unproven theory that Seth Rich (above), a Democratic National Committee staffer who was shot to death in Washington, DC, last year, had ties to WikiLeaks

'We can confirm that we are no longer advertising on Sean Hannity,' the e-commerce mattress company Leesa tweeted on Wednesday

In a late night tweet, Hannity did not mention the advertiser exodus. 'Uh oh My ANNUAL Memorial Day long weekend starts NOW,' Hannity tweeted. 'Destroy Trump/Conservative media breathless coverage starts! Did Hannity do last show?'

In a late night tweet, Hannity did not mention the advertiser exodus, though he did say that he was going on a 'Memorial Day long weekend.'

'Uh oh My ANNUAL Memorial Day long weekend starts NOW,' Hannity tweeted.

'Destroy Trump/Conservative media breathless coverage starts! Did Hannity do last show?'

A former colleague of Hannity, Bill O'Reilly, famously went on vacation last month after dozens of companies pulled ads from his show in response to reports that he paid $13million to settle sexual harassment claims made against him by a number of women.

O'Reilly did not return to his show, as Fox News fired him.

Hannity earlier Wednesday blamed Media Matters for America, a non-profit organization, for orchestrating the backlash against him in an attempt to have him fired.

COMPANIES WHO PULLED THEIR ADVERTISING FROM HANNITY Cars.com is a website which was launched in June 1998. It is the second largest automotive classified site. Its headquarters are located in Chicago, Illinois. Leesa Sleep is an e-commerce mattress brand. Founded in 2014, the company offers mattresses and blankets to customers online. Peloton is a New York-based start-up that sells an Internet-connected fitness bicycle. The United Services Automobile Association is a financial services company that offers specialized rates for military families. Crowne Plaza is a chain of upscale hotels that offers accomodations in over 400 locations spread across 52 countries. Ring is a Santa Monica-based company that markets innovative outdoor home security systems. Casper is a San Francisco-based e-commerce firm that sells mattresses. Advertisement

The Fox News anchor started furiously tweeting early Wednesday morning, after the progressive media watchdog group published a list of his advertisers for a boycott of his show.

Hannity has come under fire in recent weeks for actively promoting an unproven theory that Seth Rich, a Democratic National Committee staffer who was shot to death in Washington, DC, last year, had ties to WikiLeaks.

The conservative host has been on the defensive, particularly since his bosses at Fox News retracted the story about Rich following public outcry.

Hannity said Tuesday he's backing off his speculation about the murder after talking with Rich's family, which had appealed to the media to stop.

The decision took Hannity off a potential collision course with his network, which earlier Tuesday had removed a week-old story about the case from its website because 'it was not initially subjected to the high degree of editorial scrutiny we require for all our reporting.'

Earlier on Wednesday, Hannity blamed Media Matters For America, a non-profit media watchdog, and its 'liberal fascism' for its boycott campaign

The report quoted a private investigator suggesting that Rich had some connection to WikiLeaks and its leaks of Democratic National Committee emails during the last campaign.

Rich's family has said they don't believe their son, who was shot in July 2016 in Washington, gave any information to WikiLeaks.

The investigator has since recanted his claim, and the independent researcher Politifact.com has said the notion that Rich was involved in the leak was flimsy and illogical.

No arrests have been made in the shooting. Washington police have said they think Rich was killed in a random robbery attempt.

Hannity blames MMFA and its 'liberal fascism' for its boycott campaign.

'Liberal Fascism. Mmfa is targeting my advertisers to silence my voice. They hope to get me fired. Rush, O'Reilly, Beck, Imus, & now me.

'Notice MMFA only does this to conservatives. Smear, slander, malice, half truths, purposefully taking things out of context. Why...

'Why do they not go after NBC hosts or CNN hosts? Serious questions will now be raised on funding, tax status, and political agenda.

'Why didn't they go after HBO Real Time? Colbert? Simple, MMFA only wants to silence conservatives. Who funds them? Who are political friends,' Hannity wrote.

He then went on to post several stories about the organization to his Twitter, including articles about George Soros' connection to the organization.

Media Matters denied that it was mounting a pressure campaign focusing on Hannity's advertisers.

The organization's president Angelo Carusone said he hadn't spoken to any sponsors.

He said he wanted advertisers to be aware of Hannity's 'volatility' as part of a general Media Matters campaign to get them to think about advertising on Fox; Media Matters hasn't posted a list of sponsors for any other specific show.