It was only a matter of time before one or more of the major airlines matched [% 2893857 | | Delta's %] 500-mile bonus for bookings made on the airline's own website. First up: Continental, which announced yesterday that all round-trip bookings made on continental.com through May 31 would earn 500 OnePass miles. This leaves American, United, and US Airways at a competitive disadvantage, a situation they're not likely to allow to persist.
