http://news.cnet.com/bank-robber-hires-decoys-on-craigslist-...
It's also far less traceable. Instead of paying 50,000 people to stand in line outside of Palm, you're paying 50 people each to stand in line outside of 1000 different local businesses, whose only connection is that they happen to be next to a Palm store. A just-as-plausible explanation is that you're organizing a "buy local!" protest that day.
You could also pay people on Amazon Mechanical Turk to pay turkers to stand in line, making things even harder to track. Now instead of one guy paying 50 people each to stand in front of 1000 different locations, you have 50 guys, each one of which is paying people to stand outside Subway, or McDonalds, or Verizon, or the corner bookstore, or whatever happens to be next to that Palm store.