"You get a lot of fly-by-night companies attracted to the business when times are good," he said.

Construction industry officials typically support the fund concept as a way to drive out fly-by-night companies.

"The one thing you do worry is that there are going to be a lot of fly-by-night companies.

"These are not fly-by-night companies that just put up fancy Web sites," he said.

Many online businesses are fly-by-night companies who are here today and gone tomorrow.

The salesmen themselves are exploited by their fly-by-night company.

The bad news is that many fly-by-night companies have sprung into existence to fill this sudden demand.

The Internet "has become a huge playground" for fly-by-night companies selling potentially hazardous products, she says.

Those fly-by-night companies will not be tripping over themselves to advise seniors of their rights."

Do not fall victim to less experienced, fly-by-night companies, who must rely on third-party sources to develop your project.

"These fly-by-night companies are out there and the telephone companies are happy to take their money," he said.

Some pay phones are operated by fly-by-night companies that charge $6 for a credit card call to New Jersey.

Are they reputable or a fly-by-night company?

Fly-by-night companies produced dangerous or useless products, including one ubiquitous contraption that promised to make people taller.

"It's not just a few fly-by-night companies.

"Digital is a reputable, well-recognized leader in technology and they are not interested in doing business with fly-by-night companies," he said.

If you do book online, use a reputable hotel booking agent – there are a lot of fly-by-night companies ranked high on search engines.

"I'm worried about the fly-by-night companies."

Genworth isn't an obscure, fly-by-night company.

But many other owners turned to fly-by-night companies that relied heavily on illegal immigrants and often flouted wage and hour laws.

Three months ago Hartnell put all his cash into a fly-by-night company who'd splurged their adverts in all the national dailies.

Minister Hudak warns consumers to be on their guards, because fly-by-night companies often disappear before the ministry can investigate or charge wrongdoers.

“There’s no shortage of fly-by-night companies that would claim to be an energy auditor,” Mr. Rodgers said.

"Classmates.com is not some fly-by-night company -- it is a real service, not something being operated by unknown people offshore," Sinrod said.

"They want a fly-by-night company or companies to come in, hire people for as low a wage as they can get, with the attitude of saving money."