(Illustration by Duane Hoffman, MSNBC.com)

At first they demurred, saying the cabin crew could and should handle it.

Then, following the lead of many libraries, schools and workplaces, American Airlines and Delta Air Lines announced that each will ask AirCell, the provider of their in-flight wireless service, to filter the content. The goal: to block passengers from surfing Web sites that may offend those seated nearby.

Will other airlines do the same?  It looks like they will. Or will seriously consider it.

That’s what I discovered in preparing my Well Mannered Traveler column for MSNBC.com this week.

And since everyone was talking about what to do about the possibility of passengers surfing porn on airplanes, I did a little digging around on the topic of adult magazine sales in airports.

No one really wanted to talked about it – on the record.  I got scolded for asking.  I got corrected (“We call them ‘sophisticates’ not adult magazines.”),  and I got a lot of conflicting information.  And I ended up with lots more questions about who decides what can – and cannot – get sold in airports.

More on that later.  In the meantime,  find out which airlines will join American and Delta in filtering in-flight Wi-Fi in my Well Mannered Traveler column on MSNBC.com.