actually, air canada's promotion is also listed on maxmiles' statement:
"Fly 3, 4, 5 or 6 Star Alliance member carriers (United, Air Canada, Lufthansa, SAS, Thai and Varig) on paid qualified fares in any class of service to earn 5,000-50,000 bonus miles. Call 800/930-3056 to register, quoting reference MPW 008. From Air Canada, valid until 15-Nov-1998."