Keeping up with changes in the telecommunications/frequent-flyer world is about as easy as … well, it’s not easy at all. With MCI/Worldcom slogging through its own problems, and Sprint and AT&T sprouting new partnerships all over the landscape, it’s easy to lose track.

So once and for all (or at least for the next few minutes), here’s the landscape as it stands today.

Reports of MCI’s demise have been greatly exaggerated. Right now, British Airways Executive Club, Hawaiian Airlines HawaiianMiles and Northwest WorldPerks are all offering substantial (between 5,000- and 10,000-mile) bonuses for switching to MCI residential long distance. Southwest Rapid Rewards members can get two credits for signing up.

Sprint has recently joined with a number of programs, all of which are offering bonuses. Signing up for residential long distance will earn up to 6,000 miles on America West FlightFund, Midwest Express Frequent Flyer, Alaska Airlines Mileage Plan, United Mileage Plus, US Airways Dividend Miles and Virgin Atlantic flying club.

Those who prefer AT&T long distance service can earn bonuses of at least 5,000 miles with American AAdvantage, Continental OnePass and Delta SkyMiles.

AT&T wireless is currently partnered with AAdvantage, OnePass, SkyMiles, Mileage Plan and Marriott Rewards.

Oh, and Who is on first, What is on second and, well, you get the idea.

We’ll keep you updated on changes, but in the meantime, your best bet is to check with your program.