I did yesterday!
Thanks for the US Airways customer feedback link, Dark Skies. I wrote a letter of support and thanked US Airways for choosing common sense over (suicidal) political correctness. I told'em I plan to put my money where my mouth is and choose their airline for my future air travel.
Did as you said and sent this to US Airways:
I just wanted to send a note of thanks to US Airways for doing the right thing in ejecting six Muslim Imams from a Minneapolis flight. Please extend a thank you to all personnel involved from me and many other US Airways customers who are very concerned with whether airlines will put political correctness ahead of safety. What, if anything at all, would have happened had they been allowed to stay will probably never be known. Noted scholar of Islam, Robert Spencer has already exposed the terror connections of one of the men on his website jihadwatch.org. Please do not allow the protest of groups like CAIR, which not only refuses to condemn terrorism but has many ties to questionable organizations, to have any bearing on current and future action. Again, thank you.