Convenient
I get so tired of my bank getting nuts if I buy, say ten apps or Kindle books at 99 cents a pop.  I see a small purchase of a few items.  They see a line of tiny transactions and the fraud unit gets concerned.  So I keep a small balance in my account to cover those little things and that ends the problem.  I used to have to buy one and email it to myself.  This just makes it so much easier.
Rating: 5 stars