Not 100% related, but in the general vein... My friend owns a small business and uses the Citibank AAdvantage Business card. She has given a few of her employees company cards to use but all the miles earned go into her AAdvantage account. She only has 5 employees so maybe this wouldn't work for larger companies. But she loves her miles and uses most of them for business travel (she's the only one who travels on company business) She can also use them as incentives for her employees if she so chooses (or keep them all for herself)
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I wish I were 1,000 miles away