Most employers are vague about their restrictions on what workers are allowed to share online.
"There is no clear line," Maltby said. "The line is whatever offends your boss or the CEO."
Chick-fil-A Inc. President Dan Cathy's opposition to gay marriage has created controversy for the Atlanta-based company best known for its fried chicken sandwiches and closing on Sundays. But he has maintained his position.
While many gay-rights activists and commentators welcomed Eich's departure, there were dissenters.
Andrew Sullivan, a prominent gay blogger, railed against the pressure that led to the resignation.
"You want to squander the real gains we have made by argument and engagement by becoming just as intolerant of others' views as the Christians?," he asked. "You've just found a great way to do this. It's a bad, self-inflicted blow. And all of us will come to regret it."
Fred Sainz of the Human Rights Campaign, a national gay-rights group, took issue with Sullivan.
"I don't believe this is a question of suppressing free speech," he said. "It's a question of the market regulating itself."
Had Eich stayed in his job, "a tsunami of negativity was going to eventually overwhelm him and the company," Sainz said. "It's entirely a measure of our success as a movement that we are now part of that long list of issues that CEOs have to consider."
Robert P. George, the Princeton University professor and conservative intellectual, said Eich's case was another example of how religious conservatives who only support heterosexual marriage are being victimized for their views. George has dubbed the incident "Brendan Eich's defenstration."
"Now that the bullies have Eich's head as a trophy on their wall, they will put the heat on every other corporation and major employer," George wrote, in a post on First Things, a conservative journal on religion and public policy. "They will pressure them to refuse employment to those who decline to conform their views to the new orthodoxy."