I'm a Platinum Elite with Continental and totally understand your frustration with this occurence but not the way you carried yourself.
First off, i'd like to say that Continental Airlines does not cancel flights unless its due to a mechanical reason and of their own (Continental Airlines) fault. Theres a department called "Air Traffic Control" who controll all airline departures, arrivals, and gate changes. These are the guys you should express your frustration in regards to your cancelled flight caused by bad weather and cancelled for your safety.
Secondly, it seems awkward that you purchased tickets with Delta Airlines and happened to have crossed with 2 other passenger from the same cancelled flight. I don't understand how you'd like Continental to reimburse you the same way Continental did with the two other guys you came across. The other two guys were simply protected and rebooked on that flight and theres no way they'd get reimbursed. You purchased tickets on that Delta flight at your own will and i see how that is not justifiable for a refund. I believe you were not persistant with the airline. Every airline has team leaders, supervisors, and management to help passengers in this situation.