I tried it for the first time a couple of days ago.
I followed the instructions to send 0.4239 BTC to some address. Some time later I got a confirmation that the funds were received. The message said "You should now wait to receive a third email, which provides instructions from your carrier in order to credit your mobile phone. This email may take up to a few hours to receive."
I didn't receive the follow-up email or the credit on my phone after 24 hours. They've ignored a follow-up email as well as a message I sent from the contact form on their web site.
At best, they're disorganized and their customer support sucks. At worst, it's a scam.
I've already decided that I won't use them again. I'm interested in hearing if anyone else has successfully gotten credit.
Geez, it's clearly not a scam, the same guys already move 10s or 100s of thousands of coins per month, it's just new and they are working out the kinks I'm sure.
But when you launch and ask for feedback would be a good time to be quick on support, my simple inquiry via the form on the website is like 10 hours waiting.