You can use the Android market on the Arnova 10g2, two ways.
First you can install a custom firmware - http://www.arctablet.com/blog/featured/ ... rket-root/
I installed this custom firmware back in November and tested for two months. It has the latest Android market and lets you install all Google services like Gmail, Maps, Google +. Very stable but there is a problem with storage space with this firmware which is been worked on. Overall excellent and when the storage problem is sorted will be top notch. And you can revert back to the original firmware very easily.
Second you can install a bare bones version of the Android market - http://www.megaupload.com/?d=QSM6ATPB
Please see this link in forum for instructions - http://www.arctablet.com/blog/forum/arn ... -firmware/
This again gives the Android Market (Not the latest) and this is installed with the original Arnova firmware, and does work and again lets you install Google services. The only downside is it is not the latest and will not auto update to it either. But it is the full Android market.
And for the record when you install the Market in any of the ways listed below it does register you device with Google, you can check this by going to the Android market website and log into your account. My device was listed twice because Of having used the two methods listed.
There is also a third way well sort of through the web browser on your device - http://androidandme.com/2011/11/news/an ... l-devices/
So yes you can get the Android market on this device, maybe not officially from Arnova.