Hi there,
I think you should also ask this question at Godaddy Hosting disccussions area (old name Metropolis). There is a DNN section admin, and i believe he may be able to help you.
Yes, i have managed to apply workarounds for some Godaddy issues, but i couldn't able to display feeds from other websites. However & interestingly i was managed to apply rss for a client's website. And displaying rss from other sources working at his website (he is hosted under godaddy and i have installed his dnn manually).
The point is Godaddy still cheap, but not reliable for some features. But i am seeing some point at least they are trying to improve communication between users via Metropolis.
I also suggest 3Essentials, EasyCGI and PowerDNN. But none of them will provide huge disk space and bandwith i belive.
If you are patient user, i believe you will learn how to fight with Godaddy problems :)
If you are interested, you can subscribe to my English blog. I write some tutorials for Godaddy & DNN users.
Regards.