As soon as I heard about Apple's new Safari push notifications on OS X Mavericks, I got excited to offer it to our readers at MacMagazine.com.br. However, looking into the details I became worried as it wasn't as simple as I previously imagined.
Then, I found out about Pushwoosh and by that time they had already published a quick tutorial for everyone to easily deploy Safari's notifications via their service. It worked like a charm for us and we even received a personalized support service while the Pushwoosh team updated their WordPress plugin.
I'm very satisfied with the service! Congrats, guys! ;-)