Here's an offer most likely good for frequent business travelers. I don't know if anyone would like to take advantage of this, but here are the details:
Register between May 15 and August 31, 2009 at
for a 90-day trial of US Airways' Silver Preferred Status program ($200 value).
During that time you' can take advantage of benefits like upgrades, waived baggage fees, and bonus mileage. If you qualify during that period (it's unclear HOW exactly you would do that) you could keep Silver Preferred status for a year for free. Must join Dividend Miles program first before registering.