Some frequent-flyers like to apply for lots of credit cards. Often they will do all the applications in one day, a process called an app-o-rama.
This blog post describes what the author believes is a better way to apply for multiple credit cards, a method likely to get more approvals. He calls it an “elongated app-o-rama.”
As the blogger points out, the results of an elongated app-o-rama are very much YMMV (Your Mileage/results May Vary).