In June (and many months previous) US Airways offered a 100% bonus on purchased miles.
This month, through July 31, US Airways is offering a 50% bonus on transferring miles from one account to another. The maximum bonus under the offer is 25,000 miles.
They’ve offered a 100% bonus on shared miles in the past, so I won’t be jumping on this 50% bonus without a specific award to top off for. But I do appreciate the bonuses, the best bonus offer is the one that’s running at the time you need one for an award. So certainly one for the arsenal if you’re putting something together during July. You just need to know someone with a few miles you can have, or have family members whose accounts you can raid.