The G5 processor is going to keep it from being an effective computer... I am thinking no on Chrome, and a lot of other software. It is still usable, but it will be harder and harder to find stuff that runs on it.
Some schmo might pay for it because it has an apple on it, but it is not going to be worth much. That said, I have an old G4 that still works, but it is just slooooooow, and I don't think it will run any current web browser. (yes you can still use a web browser but limited to old versions).
I'm so much cooler online.