You can also get 100 free Continental Airlines miles by visiting this link, reading about how you can earn miles with a Continental Airlines-branded credit or debit card, and entering your OnePass number by Feb 28, 2011.

Registration is required. Bonus miles will be deposited into the primary Cardmember’s OnePass® account within 4-6 weeks after the end of the promotion. Offer valid for existing Continental Airlines/Chase Credit and Debit Cardmembers.

One card they are promoting is the Continental Airlines OnePass Plus Card, which has improved their sign-up incentive to include a $50 statement credit, 30,000 free miles, and a pretty nice mix of perks for travelers including free checked bags for you and companions.

It’s actually a good time to apply for this card because Continental and United are merging in 2011, and the resulting airline will be called United. Since these Chase-affiliated cards usually only allow one sign-up bonus per lifetime, you might as well apply for the Continental now because it won’t be around anymore after a few more months.