Hi guys,
I was able to bring up the WiShield webserver examples on the maple last night. I'm busy tonight but I'll clean up the changes I made this weekend and post a repo link for you guys.
In order to avoid the 3.3V problem, I bent the 5v pin on the shield back a little bit so it wouldn't go into the female header on the maple, then put in a jumper wire from Vin on the maple (5v if powered off USB) to the 5v pin on the shield. It seems to work fine.
I haven't tested or ported the dataflash library yet.
-perry