Attack notifications
Luckily there is a way to get attack notifications from haypi, all you have to do is install the eBay app from the marketplace and making sure that "outbid" notifications under the eBay settings is enabled. I don't know how or why it works but I know it works for the HTC HD7, I haven't tried it on any other WP7 phone yet, if you try it and it works on your device reply to the post and let us know if it worked on your device.