For all Steemites, this is one feature that helps you get around the error Bandwith Limit Exceeded. Please Wait To Transact or Power Up Steem, if you accidentally powered down to the point that you have no Steem Power and cannot use your account - whether posting, commenting, or even powering up - you can use Blocktrades to directly get Steem Power.
Blocktrades integration with SteemIt is absolutely brilliant and it supports other crypto-tokens as well, so even if you don't have Steem or Steem Dollars elsewhere, you can use Bitcoin, etc.