Let's hope UA continues the program this year. They got quite a bit more revenue from me in 2003 due to these promos (international H vs. the low fare buckets I normally buy). Let's face it... they seldom fill the econ seats so they might as well encourage frequent flyers to buy-up to a higher fare in order to take along a companion.
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The black art of how to gift UA Confirmed Region 1 Upgrades is revealed
here.