Through March 31, Air France/KLM are status matching many elite tiers to equivalent tiers in their program. Simply follow this link, fill in all the information requested, and upload a copy of your elite card to get a status match. At the bottom left of the page, under “see offer conditions,” is a link with the information about which airlines they match and to what tier in Flying Blue you would be matched. Top tier status with American, Continental, United, and US Airways, for example, match all the way to Air France top tier.
Or if you’re not all that much of a frequent flyer, this could at least save you on bag fees. If you just recently got British Midland Diamond Club Silver status for free, you could be matched to Flying Blue Silver. This would get you free checked bags on Delta, for example.