I tried sending some mastercoins out today, and this is my first time attempting to do so. I've verified with a couple of the block explorers that I have 10+ MSC associated with an address. I entered the destination address into masterchain.info, and followed the send instructions. I made sure I had a little BTC associated with that address, and dumped the private key in my QT client, pasted it into the forms, followed all of the instructions, and received the response "transaction sent" and a link to blockchain.info transaction. It's been almost an hour, and the TXID isn't showing up and my MSC balance has not changed. Can anyone confirm that this site is still working as advertised?
I learned that masterchain.info uses blockchain.info to broadcast transactions. Since blockchain.info was down when I attempted to send using masterchain.info, that is probably why the transaction didn't go through.
I missed out on the crowdsale since they pulled the Mastercoin only a few hours after posting it.