.pw is not a free domain. Microtx.com was already taken. I'm trying to get twitter/facebook reviews, just haven't had the time to set it up. Also you get a free credit when you sign up... So why not give it a try?
How does it work? After you submit your transaction, we take all transaction ids that are submitted and send them to many mining pools.
How long to confirm? As long as your transaction doesn't have a sat/B fee less than 10, AND the transaction doesn't have previous unconfirmed transactions it should confirm in less than 6 hours. So this service is very good for stuck transactions that have been sitting for over a month.
How do you know if your transaction has previous unconfirmed transactions? Simple. View your transaction on Block Chain, click on: show scripts & coinbase. If there are (U)'s next to the sender address(s) that means the transaction is unconfirmed and you will not be able to accelerate and confirm your transaction until those are confirmed.
How can you guarantee it works? We let a small group of users to try it out and we have only had great results. I know it works, and if for some reason it doesn't, you will be refunded if it's not confirmed in less than 24 hours automatically.