androidaccount.com

pdaBlast! is reporting that PDANet will be coming to Android. Application developer June Fabrics has indicated an Android version is on the way:
As a company spokesperson told Brighthand, “we do not support G1 currently. However, we do plan to support it in the future.”
This is great news for those wishing to tether their G1s. [...]

A post over at Tmonews Forums outlines a method for sharing the G1’s internet connection over USB. The method isn’t exactly plug-and-play, but is a step in the right direction. 
Here are the instructions:
 

Install the app on your android phone, by clicking here (from your phone browser of course)
You might have to change your settings to permit apps [...]