Originally Posted by
gj83
My company's travel agents made us do this. We were going to get in trouble with our management if we didn't put full name, db, and gender in the TA's website.

I dragged my feet, but since I don't have another job lined up I did comply. I haven't updated anything else though and i'm not sure what their booking site does with the info.
It appears a number of airlines have started to collect the Secure Flight data, but it is not mandatory yet.
After you book a ticket on delta.com, for example, the purchase thank you screen appears and there is link to provide your secure flight data .. but they don't force you to provide it.
I've given it a couple of times until I realized it isn't mandatory at this point.