The following procedure works, at least, for Internet Explorer.
1) Disable a pop-up blocker of your browser/internet security system, if any.
2) Go to the CitiBusiness Card 10,000 ThankYou points offer page.
3) Click on the "Apply Now" button. You will be transferred to a webpage with an application form.
4) Close the application window.
5) A pop-up window with an offer of 15,000 ThankYou points after the first purchase, will pop-up. Apply for the card via that pop-up window.
You can exchange ThankYou points, for example, for $135 in BestBuy gift certificates.
