The first radio station in Southwest Florida went on-the-air in 1940.  Seventy-nine years later, Facebook inaugurated the social media era.  Twitter, Instagram, YouTube, and Snapchat, Pinterest, Reddit, and hundreds of other sites quickly followed.

As social media matured from a novelty to part of consumers' daily rituals, some SWFL business owners began to experiment with advertising.

By every key advertising metric, though, Fort Myers radio remains the best choice for a small business to market their goods and services. Here's why.

In 1930, the Galvin Manufacturing Corporation put the first car radio on the market. They called it the Motorola. This in-car entertainment would setback a Southwest Florida consumer about $120 which would be equivalent to $1200 today.

But, if you had that kind of cash, you would be able to cruise around in your Ford Model-A, DeSoto, Packard, or Studebaker and hear the music of the day from radio stations in Tampa, Miami, and Atlanta.

It would be 10 more years until there were Fort Myers radio stations for local consumers to enjoy.

Today, there's a radio in almost every vehicle on the streets of SWFL. Despite the competition on the dashboard from other sources of entertainment, AM/FM radio remains the dominant choice for in-car entertainment.  This is great news for local business owners who depend on Fort Myers radio to market their goods and services.

Imagine that you woke up one morning and found a 100-year-old machine in your basement. You soon discovered that every time you put a dime in the machine, one dollar came out.  How many dimes would you drop in that machine?

Good news for Southwest Florida small business owners: such a machine exists and you probably have one in your car, at work, at home, even on your phone. It's called Fort Myers radio.

Over the past few years, Nielsen has conducted over 20 studies to determine what type of return-on-investment (ROI) a business can expect from radio advertising.  Although the results varied by industry, the average company generated $100 in sales for ever $10 invested.  Turning dimes into dollars.

Next year marks the 80th anniversary of WFTM, the first radio station in Fort Myers.

Since 1940, Southwest Florida small business owners have depended on radio advertising to market their goods and services to local consumers.  During the next 12 months, these consumers are expected to spend $22.5 billion.

By any measure, radio is still the best way to advertise in SWFL. Last week, for instance, significantly more consumers tuned-in to a Fort Myers radio station than watched local TV; read a local newspaper; or logged-on to Pandora and Spotify.

To buy radio advertising effectively, there are some terms every Fort Myers-Naples area small business owner should know.  Here is a list of helpful definitions.

This year marks 79 years since WFTM became the first radio station in Fort Myers.  From that time, Southwest Florida small business owners have depended on radio advertising to market their goods and services.

So, it is a fair question for a 21st-century business owner to ask: Is Fort Myers radio still relevant in the life of SWFL consumers?

"You wouldn’t know it from all the media coverage focused on streaming video and streaming music," said media expert Doug Schoen in Forbes Magazine, "but recent Nielsen data shows radio actually has the most reach among American media consumers." 

Last week, for instance, significantly more SWFL consumers tuned-in to a Fort Myers radio station than watched local TV, read a local newspaper, or logged-on to a streaming audio site like Pandora and Spotify.

If you were one of the 807,219 adults who tuned-in to a Fort Myers radio station last week, it is likely you heard a commercial for Indeed.  That's because, last week, Indeed, the world's largest online job site was also radio's biggest advertiser.

The reason Indeed invested so heavily in radio advertising is that they have far more job openings posted on their than site than there are job-hunters to fill them. 

This is not unlike the predicament of Southwest Florida small business owners who are also having difficulty finding and hiring qualified candidates.

What Indeed has figured out is that there are not enough unemployed people or disgruntled workers looking for jobs, especially among those in white-collar professions. So, the company is looking to attract what human resource experts call the 'passive job seekers'.

It turns out that advertising on Fort Myers radio is also the best way for any business owner to recruit, hire, and retain those passive, white-collar job seekers.

The National Retail Federation has predicted that this year's back-to-school shopping season will set a new record. Households with school-age children are expected to spend, on average, $696.70 preparing their kids for the first day of classes. This tops the previous record set in 2012.

For Southwest Florida small business owners, this means there is $162,864,000 of back-to-school bucks in play between now and the first bell of the school year.

According to the NRF, here's how the $696.70 per household will be spent.

• Clothing & Accessories: $239.82
• Computers & Electronics: $203.44
• Shoes: $135.96
• School Supplies: $117.49

To grab the largest share of back-to-school spending will require small business owners to advertise.  By any metric, advertising on Fort Myers radio stations will be the most effective.  Here's why.

Striking a wrong note is a potent tactic that a Southwest Florida small business owner can use when advertising on Fort Myers radio stations. This can ensure commercials are heard and remembered.

At the very second a radio commercial starts, 10,999,950 other pieces of data are battling for the attention of the listener's ear. To win the fight, an advertisement must do the unexpected. Why?

Humans don't have earlids.  This means every sound a person is exposed to makes it as far as the brain. But, the brain can only process about 50 pieces of information at a time. If you do the math, that means 10,000,050 bits of information per second are turned away.

Making it past the brain's gatekeeper requires the information to strike a wrong note or violate what is expected  This filter supports the basic survival instinct. It's why someone will leap out of bed if they hear a stranger's soft footsteps while sleeping, but will snore right through their clanging alarm clock.

Here's a quiz for Southwest Florida small business owners:

Which of these online sites reach more adults each month than Fort Myers radio stations: Google? Netflix? ESPN? YouTube? Twitter Facebook?

The answer may be a surprise. Radio reaches more adult consumers every month than all websites and apps.  This is critical information for SWFL business owners to knows to be able to choose the best way to advertise their goods and services.

The number one media characteristic that contributes to the success of an advertising campaign is reach. This is a measure of how many different people are exposed to an advertiser's message.